Like many, I like to tune up my mortise and tenon joints by hand. Sometimes I cut the joints by hand, sometimes I use power tools. Fine tuning cheeks for me has meant using a piece of wood with course sandpaper taped to it......basically I cut the tenons and then sand to fit. For tuning shoulders I usually scribe a line with a knife and then carefully pare with a chisel. It works but I want to use hand planes for these tasks now. The Feb issue of Finewoodworking actually has an article to this effect discussing the various planes for this task.
So here's my list of candidates:
shoulder plane
rabbet block
jack rabbit (this was missing from the FW article)
Let's talk about what works for you and why. I have never owned any of these planes but here's my thoughts: the shoulder plane seems like the logical best choice, rabbet block seems really handy but might not work so well on shoulders, and then there's the jack rabbit........could this be the most versatile, or is it too large for this type of work? Please feel free to comment on any others not on my list as well as the different sizes. One more fyi: I do own and use a stanley #78 but I fine it's adjustments a bit course for the work I'm trying to do here. Thanks and Happy New Year!