I've enjoyed having a couple of mids in my collection over recent years, but I use a midplus for my go-to. I switched into the Volkl C10 for several years when I wanted something softer than my old ProStaff 6.1 Classics. The C10 gave me a bundle of comfort and control right away, but I always missed the spin potential that I got with some other frames over the years, including the 6.1's.
I got a chance to sample an Organix 10 325g at the end of this past spring - a buddy gave me an extra to try out for a bit. I was curious to see what a newer "10 series" from Volkl had to offer, but after I strung it up and took it out, I was really disappointed. Bad fit for me in terms of its balance and not as stable through the ball as I like. Then I realized that this O10 had a different weight and balance than my C10's, which I'd tuned to be more head-light. Off I went to the backboard with a pack of lead tape for another go...
My results after tuning were borderline miraculous. This tuning included adding only a few grams total at 3/9 o'clock along with a good bit under my grip for more HL balance. The tuned racquet gained that wonderful soft-racquet "bow-whup" sensation at contact, I could easily catch the ball in the heart of the string bed, it was mildly more stable, and even with ordinary 16 ga. synthetic gut, I could make all the spin I was missing for a couple years or more.
I'm well beyond the honeymoon phase at this point and I now have a total of four of these O10's. I know it's a pain to suggest that you have to get this racquet with the intention of tuning it into a different layout, but I've never had more comfort and confidence in anything I've owned or sampled in a loooong time. I'd bet that coming from the PB10 mid (I've tried that one, too), the O10 325 wouldn't perform all too well for you out of the box. This is definitely a racquet with huge potential for tuning and stringing to your liking, plus it already has the familiar Volkl grip profile. If you try some demos, I vote for a go with this one big-time.