There are many different flavors of levers out there. Generally most are sidetubed to some extent. I prefer spring feed because there is always a ball ready for a a followup shot. Non-springfeed side tubes are fine, but you have to rock back every time.
I've seen a few direct feeds and they are just fine, but you might want to get a vertical adapter or an airsource of some sort to feed the amount of paint that you'd eat through. I forget who it was, but at the three rivers game, there was someone with a right feed, vertical aired KL. Had a small pocket hopper to the side and worked just fine.
The world is your oyster, have it setup however you see fit. Good luck!
Originally Posted by russc
Senghing, you are the happiest paintballer ever.