You really need to get behind them to see if you like it. My friend bought an MPCT3 and could never get used to it, and ended up switching back to his Razor, and is looking to possibly trade down to an MPCT2.
For NRL22, the tree isn't a big deal as your max holdover is like 100 yards. For Nationals it will be very useful as you'll be shooting out to 400, and you could be doing hold over distances at 3-7mils repeatable with wind.
For the 22, I found a lighter scope to help balance the rifle was better than the heft of a ZCO.