I have a 9mm p2000 lem v2, a usp tactical 9sd and a usp tactical expert 45. I have never shot a p30 but really like all my HKs. The p2000 has replaced my G36 as my favorite ccw and I don't expect that to change anytime soon. I don't currently own a sig but all the ones I have owned have performed well for me but I like HKs better. You can't go wrong with any of your choices.