For range use I generally prefer 130gr FMJ. Currently using PMC 132gr FMJ, but that's mostly because I've still got some boxes left from a case I bought a while back. I'm not particularly picky about practice ammo.
For self defense, my favorite standard pressure load was Federal 125gr Nyclads. Unfortunately, it went out of production a few years ago, after having been reintroduced from a rather long hiatus. Hopefully, they will return to production at some point in the near future. I still have a few 20-round boxes left.
I have been experimenting with some 148gr WC ammo as a possible standard pressure defense alternative to my preferred Speer SB-GDHP +P.
I tried some Sellier & Bellot, but got some crazy long vertical tears in the target at close range, about 5 yds. At first, I thought they might've been keyholing, but after mentioning it in another thread it was suggested it might have had more to do with the free-hanging nature of the targets. Jury's still out on that one.
Last week I ran about half-a-box of Fiocchi 148gr WC through my 642, and actually got good results with that load. Nice, clean holes even in free-hanging paper targets at 5 yds. I don't have a chronograph, but my guess is that the Fiocchi load might be at a higher velocity. Just a guess.
Both WC were easier to control in my 642s with PGS Hideout grips than +P loads.
For quite a few years I've been wanting to try Winchester's 130gr Defend JHP load, which is standard pressure. From what I've seen, it seems to offer acceptable performance in gel. However, every time I've gone looking for it, I could never find it. Oh, well.
I'm a fan of Buffalo Bore's 158gr LSWCHP standard pressure load, and I would not hesitate to carry it in my 642s if I couldn't find any SB-GDHP. In fact, I still have a partial box left. However, even though it's labeled as standard pressure, I pretty much consider it +P due to the velocities it generates. Similarly, I equate their +P loads with +P+ by other makers and treat them accordingly.