L188,
Weigh the paths to PIC time- there will probably be a unit and airframe that would require at least one less iteration of going to the schoolhouse. As you do that comparison, get to know the actual folks you'll be working with- unlike active duty, there is less turnover in the Guard and Reserve. Then- as stated- find out about deployment rates, BRAC concerns in the past and future, mission change threats if not directly BRAC (like switching to UAVs)- etc.
Also- if not full time in the Guard or Reserve- Avoid any commutes if possible, or keep it to one doable commute!