If you can swing it in money and space, take the BF20/g0704. You just can not over-state the addtional room for vices, setups, etc. I have both and jobs that are a bit of puzzle to setup on the X2 are easy as pie on the PM-25. Also if you are turning handles it is much more simple to move around in 0.1" revolutions rather than 0.0625".
The other thing is you don't have to work nearly so slow on the bigger machine. The Grizzly price is darn hard to beat and I'd have real reservations in paying $900 for an X2.
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.