my values with the dell xt2 to make it feel more natural with both my trackpad and my mouse:
- reveal pressure: 50
- edge stop overcome pressure: 30
- pressure decay rate: 60
- edge stop velocity: 50


hw info:
trackpad:
[     7.696] (II) config/udev: Adding input device N-Trig Pen (/dev/input/event7)
[     7.696] (**) N-Trig Pen: Applying InputClass "evdev tablet catchall"
[     7.696] (**) N-Trig Pen: Applying InputClass "Wacom N-Trig class"
[     7.696] (II) LoadModule: "wacom"
[     7.696] (II) Loading /usr/lib/xorg/modules/input/wacom_drv.so
[     7.698] (II) Module wacom: vendor="X.Org Foundation"
[     7.698]    compiled for 1.11.3, module version = 0.12.0
[     7.698]    Module class: X.Org XInput Driver
[     7.698]    ABI class: X.Org XInput driver, version 16.0
[     7.698] (II) Using input driver 'wacom' for 'N-Trig Pen'
[     7.698] (II) Loading /usr/lib/xorg/modules/input/wacom_drv.so
[     7.698] (**) N-Trig Pen: always reports core events
[     7.698] (**) Option "Device" "/dev/input/event7"
[     7.698] (II) N-Trig Pen: type not specified, assuming 'stylus'.
[     7.698] (II) N-Trig Pen: other types will be automatically added.
[     7.698] (**) Option "Button2" "3"
[     7.698] (--) N-Trig Pen stylus: using pressure threshold of 27 for button 1
[     7.698] (--) N-Trig Pen stylus: Wacom USB TabletPC tablet maxX=9600 maxY=7200 maxZ=256 resX=36772 resY=44173  tilt=disabled
[     7.698] (II) N-Trig Pen stylus: hotplugging dependent devices.
[     7.698] (EE) N-Trig Pen stylus: Invalid type 'cursor' for this device.
[     7.698] (EE) N-Trig Pen stylus: Invalid type 'touch' for this device.
[     7.698] (II) N-Trig Pen stylus: hotplugging completed.
[     7.714] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.1/usb7/7-2/7-2:1.1/input/input7/event7"
[     7.714] (II) XINPUT: Adding extended input device "N-Trig Pen stylus" (type: STYLUS, id 10)
[     7.714] (**) N-Trig Pen stylus: (accel) keeping acceleration scheme 1
[     7.714] (**) N-Trig Pen stylus: (accel) acceleration profile 0
[     7.714] (**) N-Trig Pen stylus: (accel) acceleration factor: 2.000
[     7.714] (**) N-Trig Pen stylus: (accel) acceleration threshold: 4
[     7.715] (II) config/udev: Adding input device N-Trig Pen (/dev/input/mouse1)

my mouse:
[    63.766] (II) config/udev: Adding input device Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) (/dev/input/mouse4)
[    63.766] (II) No input driver specified, ignoring this device.
[    63.766] (II) This device may have been added with another device file.
[    63.766] (II) config/udev: Adding input device Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) (/dev/input/event13)
[    63.766] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Applying InputClass "evdev pointer catchall"
[    63.766] (II) Using input driver 'evdev' for 'Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)'
[    63.766] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    63.766] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): always reports core events
[    63.766] (**) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Device: "/dev/input/event13"
[    63.766] (--) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Vendor 0x45e Product 0x40
[    63.766] (--) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Found 3 mouse buttons
[    63.766] (--) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Found scroll wheel(s)
[    63.766] (--) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Found relative axes
[    63.766] (--) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Found x and y relative axes
[    63.766] (II) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Configuring as mouse
[    63.766] (II) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Adding scrollwheel support
[    63.766] (**) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): YAxisMapping: buttons 4 and 5
[    63.766] (**) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[    63.766] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb6/6-1/6-1:1.0/input/input14/event13"
[    63.766] (II) XINPUT: Adding extended input device "Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)" (type: MOUSE, id 18)
[    63.766] (II) evdev: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): initialized for relative axes.
[    63.767] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): (accel) keeping acceleration scheme 1
[    63.767] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): (accel) acceleration profile 0
[    63.767] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): (accel) acceleration factor: 2.000
[    63.767] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): (accel) acceleration threshold: 4