Am not a master yet but climbing the pro ranks. I was a cheapskate for a long time, using the free clubs. When I sprang for the Pro Raptures and the rest of the set of paid clubs, I hoped to bring my game to a new level and so it was!
In truth, when it comes for example to Bethpage, with the longer driver (255) and all the rest, you are essentially playing a different course. Suddenly the par 4's (!) are reachable in two, not to mention the par 5's. The Rapture Pro irons give me enough backspin to help keep the ball in birdie range, although it can be dicey and they don't really hold on the uphill approach shots at Bethpage.
The Redwood putter gives excellent control over the length of putts, although aiming and release remain, shall we say, my own issues.
The longer, more accurate wedges have a pretty fast release, which cuts into my consistency. Desideratum for me would be to have all clubs, from driver down to wedges, with the same meter speed etc.
I have seen some folks, including masters, saying they have no use for the 215 club, which is a 2-hybrid, but what is crucial for me about that club is that I can hit it far from the rough, which is a constant threat at Bethpage. (My favorite course. Call me a masochist, or maybe it's just because I played it in real life once...)