I have one. Since switching to it and FFS, its all I use for all the guns/calibers I shoot.
Bit of a learning curve with FFS but its worth it.
As far as the Trimble, make sure you get the Lithium Ion battery and a charger as I ended up getting one with the AA cradle and it devoured the batteries in a matter of hours of light use. The only downside of a Trimble so far for me is just the size.