That's a tough call. I love my 1911s ad I love my HK45 and have been eyeballing a P30LS for a while now. The P30 is going to be fatter but I've been carrying my Hk45 most of the summer so the P30 can be concealed if you're willing to dress around the gun a little more.
I'd go P30 but I've been on kind of an HK kick of late. Budsgunshop has some pretty good prices on them.
Also, if you haven't read over it, you have to check out the Pistol-Training.com "P30 Thursday" articles.
91,322 rounds (All in 42 weeks)
13 stoppages, 0 malfunctions, 5 parts breakages
test ended at: 91,622 rounds
At 91,300 rounds, the P30 was running strong. Even after a chunk went missing from the frame, the gun had turned in well over five thousand rounds of accurate and reliable service. I carried it every day.
By 91,322 however, the pistol had suffered three stovepipe stoppages. In the course of those twenty-two rounds, the P30 — hot, broken, and abused — finally skipped a beat. Something clearly wasn’t right. So on Monday, the pistol got packed up and sent to HK’s Sam Bass for a detailed inspection. Sam has been the go-to guy for every technical issue and question during this project, and if anyone was going to get to the bottom of this, it was him.