tpoppa,
I've used Elk Masters & Brunswick Blue Diamond tips for more than 40 years & they have worked great in the area you're talking about, most spin with the least speed & that is what the difference is about. As many say, one can get as much spin with a hard tip as a soft tip but can one do it with the EXACT same speed. It's all about spin to speed ratio.
Several years ago I purchased an OB Classic with a Kamui Super Soft. It seemed like the tip was sticking to the cue ball. It was too much for me even though I have used those very soft tips for more than 40 years. Per someone's advice I took several layers off of the tip & then it was fine for me. I just recently bought an OB Classic Pro with a Kamui Clear Medium tip & I like the combination very much & better than the OB Classic Pro that I had picked up with a Le Pro on it.
Also FYI, one of the best players in the New Orleans area just recently told me that he feels that it's easier to move the ball with an OB Pro than it is with a Predator Z2 as it's not quite as stiff, It's stiff, but not quite as much. I'd recommend either one, the OB Classic or OB Classic Pro with either an Elk Master or a Kamui Super Soft. The difference is the Classic has a 12.75 mm diameter with a Pro Taper & the Pro has an 11.75 mm tip with a modified conical european style taper.
Good Luck in getting that for which you're searching.
Rick
PS The old Meucci shafts with a soft tip could really spin the ball too but I just never liked the whippy feeling of the long straight taper.
PPS I still have a Predator 314 CAT shaft that was 'juiced', sanded down to right under 12 mm with a soft tip that spins the ball too much for me on long shots. I would dare say that the ball swerves way more than it squirts so the net effect is 'negative squirt'. I love to spin the ball, but 'too much' can be hazardous & difficult to control. To me this shaft tip combo spins it 'too much'. It's great on short shots but 'too much' on the 7 to 9 foot shots.
PPPS Naturally all of the above are just my opinions based on my experience & there are very many shaft tip combinations that I have not hit & hence can not comment on. Good Luck Again.