The Master Redwood is, of course, the best putter in the game but as I have said several times, it's severely overpriced for the minor differences between the Rossa and the Redwood.
Honestly, the Rossa can accomplish equal results for a lot less dough. The only reason to purchase the master Redwood is for bragging rights alone.
Putting relies somewhat on the club and but heavily on reading the green. I've seen and continue to see masters using a very low priced putter with very low averages.
In closing, if you can't putt with a low priced putter, a higher priced club won't make any difference. The problem is most likely in your read of the green.
TMPC