Try before you buy is the real way to go.
You can magfed as a style (once you have your hands on a magfed) and play any walkons, scenario events etc, or you can play magfed / limited paint specific games - at which they will most likely have a magfed rental option so you can get a feel
I recommend the spyder hammer 7 as a good fun & vfm magfed gun. But it's discontinued so you would have to find second hand or get lucky with a dusty one on the shelf (doubtful as people rushed when they became discontinued)
The hammer is a pump action magfed and has the option of being used with a hopper
Other spyders such as the mr5 are available still in magfed
Approx £200
Pistols are an option at approx £200
But I would only recommend pistols as a primary, so you have a limited paint system that is light. Carry as a secondary and you have a heavy thing in a holster
The dye dam will set you back under £1000, giving you magfed or hopper and the advantage of a modern electronic gun as opposed to most magfeds which use basic old mechanical technology
There is a slightly cheaper 'cqb' dam which basiclah means you don't get the stock. I wouldn't recommend that - if you want a dam then buy the full dam and use it with or without the stock as you wish at the time.
Anything else will be in the region of £400, and is likely to be dedicated magfed
I don't get on with the magazines on most of these
I can easily naturally slot in magazines to pistols, the hammer and the dam. I struggle with 'd mags' etc
For games watch this forum, and the paintball calendar
http://www.paintballcalendar.co.uk/categories