I suppose everyone has their own look on upgrades and definately if they have one fitted.
Our team has used EGOs for 2 years now, bulk standard, factory settings out of the box and we have never needed any upgrades.
I do tech a lot of EGOs here in the NSPL and have some sent from other parts of the country and the only problems I have had is where people feel the need to have different boards, rammers and valves. I change them back to standard and have had plenty of feedback from happy customers telling me their markers are awesome.
Happy days!!!
Nige