If you just started playing then I would suggest one of the “King Of The Hill” events held by MM or SWPL.
If you have been playing for a year then MM, M25 or SWPL are excellent paintball events.
If you are Pro team the MM 7-man or M25 Div 1, but as you are asking these questions I take it you are new to the scene.
I would suggest start where you have a chance of winning then work your way up the div’s. Going to events week in, week out and having your butts handed back to you will kill your team. Do what everyone else has done start at the bottom and work up
Well that’s my 10p worth, hope to meet you some day