Anyone who shoots "real" handguns, rifles, etc. will appreciate the feel of a Tippmann model 98 Custom. This paintgun has what can be compared to a 1911 frame and a SINGLE trigger. Those double triggers feel very awkward if you are accustomed to the feel of a real firearm. I use a 98 and everyone I play with/against uses them. They have a very simple design, anyone with basic firearms know how should be able to completely dissasemble/reassemble one with ease. They are very reliable and accurate. I have played against people with $600 markers and beat them every time. I promise you, if you buy this combination, you will be the king of the field.
Tippmann model 98 custom
Armson Stealth 13"/16" rifled barrel ( a must get item, accuracy is incredible)
VL Revolution 9V hopper ( you will want this after playing a couple of games and shaking the hell out of your hopper)
RP Scherer Marbalizer paint: Gator Green ( I have tried alot of other brands and nothing shoots better in the gun/barrel combination)
Whatever you do, DO NOT ADD ANYTHING INTERNAL TO YOUR MARKER. I tried alot of different "upgrades" and nothing, I repeat, nothing was reliable. I wasted alot of money on stuff that made the gun malfunction.
Things that aren't worth buying:
Armson Power Feed
Billett power tube
Venturi style bolt
Rocket Cocker
Get a good mask. If you experience fogging problems, email me and I'll give you instructions for a cheap, simple, very effective defogging fan. This goes for any of you paintballers. Email me and I'll be glad to share my little secret with you. Have fun and be safe.
Edited to add: You will want a 20oz. CO2 tank and a remote. Trust me on this, it gets the weight off your marker and is much better on the internal parts of the gun as less liquid Co2 goes through the gun and freezes the O-rings.