alosso: most of all, balance is missing, and that shows only on long distance putts.
Therein lies the problem.....most lower level players are putting from longer distances, so any putter with better attributes will help.
But there is a caveat, and it comes down to cost. If you have money to throw at the game. upgrade by all means as the better clubs will help the scoring...but you still need to learn how to use them.
Lower level equipment will become obsolete quickly, therefore if money (credits) is a factor....take your time to get the latter equipment alosso mentions.
I personally did not upgrade clubs till I made Master.....then it was pay up or quit. The game is great fun and was worth it......if I did it again would I upgrade sooner.....yes!
But if money/credits is an issue....be prudent and wait as long as you can to avoid the gravy train.