My Zero cents, since you didn't even pay 2 penny for my thoughts...
38spcl is plenty for the application, so talking about anything more powerful is just pedantic.
38spcl+P is better than 38spcl, but it's really only gaining range, not really offering much in way of performance increase. It DOES tend to make folks feel better about what they're carrying, whether the difference is realistically moot or not. The increase in recoil is real, but often it's still well withunder the tolerance threshold of most shooters.
357mag is better than spcl or +P, but most folks will find the recoil harsh, especially in an ultralight framed revolver.
I carry my LCR typically stoked with 357mag rounds, the recoil isn't pleasant, but I do not struggle to fire a 25-50 shots at the range without developing an ache. Running 100 in a session becomes unpleasant. Then again, I often carry a Ruger Kodiak Backpacker in 44mag, stoked with long seated 300grn XTP's over 22.0grn H110 (higher than book, reload at your own risk). My wife, on the other hand, carries an SP101 at full weight, loaded with 357's, because she doesn't like the recoil of the LCR, and would rather have the power of the 357. My Mother-in-Law and Grand-mother-in-law, at the other end of the spectrum from myself, carry LCR-38's stoked with reduced recoil 38spcl loads, because even full power 38spcl (not +P) loads are too much for their recoil tolerance. Neither are interested in 327FM/32H&R, simply due to relatively low ammo availability, especially local to where they live.
As an instructor, I teach students to carry the most powerful handgun they can MASTER; not to be confused with the most powerful handgun they can MANAGE. There's a dramatic inflection point for all shooters, where increasing power suddenly causes a problem. Many folks can manage their way through a proving course with a cartridge which exceeds their inflection point, but they'd often do so with much greater accuracy and in shorter time with a cartridge below it. As an example - I own 45acp micro compact pistols, but despite over 25yrs firing super magnum revolvers, I've proven on the clock I just don't run a Springfield micro compact as well as I do an EMP 9 or 40, and don't manage my G36 as well as I do my 43. So I carry my 9's more often than I do my 45's.