Well you need to decide whether you want a real gun look or a speedball gun. Advantages of a speedball gun over a woods gun:
- Can take it to the woods and tourney if you decide to play speedball.
- More air efficient
- Should be more consistent
- Smaller
- Lighter
So you have to decide, those advantages or a milsim look.
If you go for a speedball style gun, look at second hand ion's, vibe's, pmr's and slg's. All good markers for their price range.
For a milsim style gun, look at the bt TM7 and the tippmann x7.