mapped both my golfs. my 150 was a chapo map but it made 189bhp and 210 lbft and pulled great but ran quite hot and ended up cracking a manifold melting spark plugs etc so i'd deffo 100% go with a decent reputable company.
My 180 anni I got a jabba map on it, smooth power very drivable, not been rolling roaded but totally transformed the car its gotta be round about 205bhp and surprises alot of cars on the road.