:Lets start with the problem.
I normally ride a SRAM 11-32, but felt the fast end of the cogs never really got used - and the 2, 3 and 4 tooth jumps weren't geling with me: 11-12-14-16-18-21-24-28-32
So I found a 13-34 cassette that goes:
Unfortunately I've emptied my wallet and doubled the weight of the cassette in the process, but after a couple of rides I'm sure I will have convinced myself that it's a good thing.
In the garage I still have my original custom 7 speed cluster from the early 90's on my Klein Rascal : 13-15-17-19-21-23-26...........Got it brand new in the build kit and had it in bits on the workbench before the day was out.....who needed a 28 in 1992 anyway ?