I have the 3" SP101 and it's a comfortable-to-shoot, compact revolver, "just enough."
While it may be a bit heavy as a CCW for some, it's light for something others would pack on the trail. Mine is also very accurate with a number of powder/bullet combinations, as it has shot well with anything I have thrown at it. I don't think many of us would be able to wear one out either. I had quite a number of Security, Service and Speed Sixes over the years and loved the actions' simplicity and ruggedness. Was not at all impressed when the new GP100 came out but it seems it has "stuck" so it must be OK. The SP, being similar to the GP and either being close enough to the "Sixes" suits me fine. Not as easy (for me) to tune, but not difficult either. I have never been a real big .357 fan, but in the SP101, it's a lot of punch and a lot of versatility in a small package. I have not owned a .327 and probably won't. It's cool that someone is always experimenting and I am sure the cartridge is great at someting(s) but, between the .22 LR, .38/.357 and the .44 Special, I don't need another "mouth to feed" when it comes to brass, molds, etc. Anything a .327 can do, can be done with one of the larger, more common calibers I use. Don't get me wrong, I have had and enjoyed several .32 mags. They are interesting, fun and cheaper to shoot than larger calibers but just don't do anything I can't already get done. In the SP101, if you're curious and want something "cool and unusual," a .327 would be neat, but I prefer being able to stuff the lager diameter round in mine.