I started out hitting with the Wilson Hyper Hammer 5.3. Once the H5 came out I thought I ought to give that one a try and I did. Then I got my mits on a Head i.Radical and really liked the headlight balance. Still I was having trouble keeping the ball in play.
So then one night at the racquet club I was playin with the i.rad and bam! strings broke. My other i.rad hadn't been strung yet and the only thing I had to hit with was this old Pro Kennex Composite Phrophecy. It was a heavier graphite stick. I hit with that for the rest of the night and really played some great tennis. That's when I made the decesion to go with a heavier yet head light balanced midplus racquet. I read up for a week or two on a decent midplus racquet and it seemed to me that everyone and their brother really loved the Wilson Pro Staff 6.1 Classic 95". I bought one and while it took a bit to adjust to it....once I did, there was no looking back. I hit heavier top spin with this racquet than I ever have before. I still don't quite understand how they call this thing control oriented until I hit with an oversize....holy crap! I get plenty of power on my midplus sticks and they're strung at 65/63lbs Mains/Crosses.
On a side note, I use babolat pro hurricane on the mains and superfineplay on the crosses. A lot cheaper than natural gut and I still get decent feel. I would never volley with any other racquet the way I do with this one. Everything just feels so crisp. Serving is amazing with this racquet, plenty of pop and spin potential when you need it. I hear the Ncode nSix One 95 is practically the same racquet and thats good to know...they don't make these classic 6.1's anymore...if they do its a very limited quanity. You can still find em online....round 100-130 bucks depending on where you order it.
I suppose I should answer your question....I got off on a rant there. A midplus racquet allows you to swing out on your shots and still keep the ball in. Those big ass racquets are meant for people that can't generate their own pace. If you go with a heavier stick (12 oz), it will add more weight to your shots, just a heavier ball comin at your opponent. The difference in sq inches really isn't all that much...if your hitting the sweetspot of your oversize racquet, you'll do the same with the midplus....but you won't be as lucky with off center shots. I think it forces you to focus more on what your doing and in the end it makes you a better player.