reply to NvS question.
If you want a first marker that will not let you down, is easy to maintain (i.e you can dump it in a bucket of water at the end of the day, it wont hurt it) and generally abuse the hell out of it, then the tippman is a good choice (Most of the paintball sites use these for that reason, low running costs)
However, I have now decided that - although my Tippmann has pretty much every hop-up you can get - I require a 'Tourny Legal' marker, hence I think I will be going for a Cocker as I do not like the problems associated with electronic markers.
There is no basis for comparison between the two, as they are both designed with different markets in mind. I would hate to go tell you to but a Tippmann, and you come back 3 months later saying that you are bored with it, and likewise if I were to tell you to get a cocker, and you come back ranting that it doesn't work properly on account of not being setup right.
GO TO WDP/SMARTPARTS/PLANETECLIPSE and have a look at what is on offer, I am sure they will give you the low down on al the guns, and you can then make an informed choice.