I use 4.2" SP101's in .22 and in .357. Great, solid little revolvers. The DA is a little heavy but smooths out quite a bit with use. I'm still a fan of the .22 for a first one...but powder puff 38's in the .357 are a lot of fun too. I don't have any experience with the .327 but it's nice to have it as an option.
The 3" LCRx in .38 might be worth a look as well.
