I really like S30V. I haven't really been disappointed at all. It's my go-to steel for EDC.
I take my knives down to a 30 degree inclusive edge, and really thin down the bevel. This way even with the working edge that S30V develops, and holds for a long time, it still cuts extremely well. Even thinned out I have yet to see chipping under normal-hard uses. I've never had problems with rust, corrosion, or tarnishing with S30V; I couldn't say the same about ZDP-189, D2, 154cm, VG-10, or CPM-154.
Hardness is going to depend on the manufacturer's heat-treatment. Some heat treat it a little harder, some a little softer. CRK is famous/infamous for their 58-59 HRC treatment of S30v. Personally, I like what CRK does--to prove a point to one of my friends about higher-end steels, I used my LH Umnumzaan to shave slivers of metal off of some kitchen tongs. The edge only rolled, it didn't chip.
As a lefty myself, I'd enthusiastically endorse picking up a LH Military. I got one earlier this year, and it has really made me appreciate well made linerlocks--probably because it's made for lefties!