I currently own a 675 Spider and just sold my 720s in preparation for my incoming 765. I had a chance to drive a friend’s 765 coupe last week back to back with my 675 through some twisties.
The cars both feel very raw. The 765 is a lot more powerful and ferocious in its power delivery. It also seems to have a little less lag. They both sound fantastic although because of my car being a spider the sounds seemed a lot more lively than the 765 from inside the cabin. I’m sure the 765 spider will have the same advantage as well. The shifting on the 765 in sport mode also has a nice kick to it, which I loved. Overall, I’m very excited about getting my 765. It’s truly a phenomenal car and is clearly a superior car.
All that said, I would never part with the 675! For me, the 675 is the more usable and stable car for canyon driving, which is how I mostly use my cars. The 765 is so fast and ferocious that I feel you need a track to get more out of it. I don’t know how to explain it, but the 675 seems more balanced to me under hard acceleration whereas the 765 feels like it’s a wild animal clawing for traction when you hammer it. Great fun but also a bit too much on public roads. Again, just my initial take in comparing the two cars and in no way a deterrent from me picking up my 765. If anything this drive solidified my excitement for the 765 while re-enforcing my love for my 675. As scrappy said, everyone has their own take and I’m sharing mine with the OP.
The other reason why I would never part with my 675 is because to me, the driving position in the 675 is absolutely second to none. I have never driven car that seemed more Go-kart like than the 675. The outward view over the hood is perfection. From the driver’s seat, the 765 seems like a bigger/wider car to me than the 675. I felt the same way about my 720s. I know on paper they’re about the same size but to me the double skin doors on the 720/765 platform make them seem a lot wider from the driver seat.
Lastly, It’s personal preference again but I also like the interior layout of the 675 more than the 720s/765 platform. It just feels more intimate and jet fighter like. Plus, I love the analog speedo over the digital as it harkens back to a time forgotten.
Bottom line, if you can, definitely own both!