i asked the same question and they told me they were gonna send me to DFW because it was a quick and easy process (it was). i live close to both so i didn't mind.

by the way if anyone is curious what the bases/equip were for the 4/11 class they were as follows

5 DFW EMJ
10 MIA EMJ
1 LGA CRJ
5 ORD CRJ
8 SJU ATR

... youngest to take a jet was 24.

keep in mind this means nothing about what will be available for the next class but i thought i'd help you out if you were curious