Tippman's are nice for noobies. You can hammer nails with them, dunk it in mud, spray it off, and keep playing.
Spyders are good for noobies too. I like the way they feel better than the Tippman's, but that's just my opinion. Had one back in '98 when there was only 3 versions of it

Wish I'd kept it as a backup.
Owned at some point or another 2 automags, 3 autocockers, 1 angel, 1 palmer pursuit "stubby" typhoon (converted to electronic since), a matrix, an excalibur, 2 'timmys, and more sidekick semi's than you can shake a stick at. I'm getting a new 'timmy with a WAS board. I'm going to hit 40bps in semi. It's gonna be neat.
btw, as for semi/full auto. You're not gonna see that on anything but electric markers... unless you hook up a battery powered servo in the trigger guard. It's also not allowed at the majority of fields due to insurance regulations. The scenario promoter I normally play uses Lloyd's of London sports insurance just so we have the option of full-auto, and then only at 9bps, and only during the day. It's not hard to blow past 9bps in semi auto with some practice.
Oh yeah, I almost forgot. Airsoft sucks! The guns are cool, but the majority of the players (in this town) have no aggression whatsoever. We (myself & some "paintball" friends with airsoft guns) have been outnumbered (horrendously, 10 vs 40+), and completely mauled the "airsofters" on a whim. It's kinda sad.