Heh, I used to be able to kick ass with my PMI III, it's still the most accurate semi auto I've ever fired, and I've tried all the new ones.
The reason I am leaning toward the A5 is because of the feeder, I like how it's tied into the trigger mech, so it's always got a ball available. I know it sucks for some cover, but on most of the fields I play on out here that won't make much difference. I used to own an Automag, but found it to be expensive to keep going. I've also tried a bunch of the newer guns with electric eyes and such, and had tons of failures with them. I think for speedball or tourny play they'd be great, but for bush games not so much, as crap can get in there and block the eye. The A5 being a gashog does't bother me much either as I haven't had a problem with the ones I've borrowed not lasting a game. Air is free at our fields, so I just gas up in the safety area and I am good to go.