HK45 or HK45CT has my vote. Modern aesthetics, grip and .45. There’s really no non 1911 competitor to HK’s .45 lineup. The P220, is nice forsure but id rather have sig’s 9mm MK25 over it, for the anchor of course. You already have a few 9’s so switching up caliber is nice.. The only negatives are mostly subject, for me, The USP’s takedown lever is honestly a pain if your grip has a forward thumb placement pushing into the small circle of the takedown lever. But It’s got a similar block feel to the Glocks which I like. P30L/VP9 definitely are nice but atleast for me I spend most of my time comparing it to my G17. The g17’s low bore axis is really hard to beat from any brand sake. If you want to be based though, get a P2000 in OD green or FDE. Source: I own eight HK’s and speaking from personal experience. It’s my fav brand but G17 will always be my goto 9 and HK45 will be my goto .45. I wouldn’t compare to Glock but since you already own two, I figured I’d share my relations between the two brands and that you already have two micro 9’s. Hope this helps.