My favorite shingle to lay on cut up roofs is the Certainteed New Horizon shangle. Stairstep every six inches with a five inch exposure.
Very close in personal prefference between Timberlines and Landmarks both are very good grippers on steeper roofs.
Did a few roofs with Elk shingles and disliked them, actually one was tore off a week later due to wrong shingle brand, they wanted New Horizons! Really disliked there Z ridge or whatever the junk is with the five inch lap that you have to bend prior to laying. I think they have a different style ridge now that is easier to use.
Not a big fan of Owens Corning as every roof I've done useing them seem to be stuck together.
I beleive IKO makes the Dynasty shingle which I was really impressed with a couple months ago. Installed below freezing with no problems at all.
For three tabs my choice is Sealdon 25's.
Well I live close to Shakopee MN were most of the Certainteed shingles are made so I may be impartial to them!