Raid, I'll be the contrarian.
Your stuff is well centered around 50 mm, but you like to go long as well.
I am assuming you have tried, but don't care for the Hexanon lenses,or you'd have one.
I have to tell you, the medium wide length is lacking for you, and the lens which has changed my thinking the most is the Hexanon 28/2.8. You live in Forida, so especially outdoors, low light is at a minimum. For the money, I think you'd be surprised how happy you might find yourself with something like Krosya's hex 28 (no, he isn't going to give me a finder's fee), and the initial entry doesn't take you out of the 75 range if you bank it and add a little along. Meanwhile, you have a length you have added that might please you for a reasonable amount.Much cheaper than a 28 cron or cron ASPH.
I'm biased, admittedly, toward wides, since I have more than one (I got the best, a UC Hex from Mike Tuomey which I'd like to weld to my MP. But from my view, you have been handling your portraiture quite nicely, thank you very much...
So, there are my MICRO-cents.
Michael