John, I am not sure if you can or will answer this but if you were buying a suit for track days (maybe eventually some racing) assuming fit is perfect what suit would you buy? .
Well, here is the deal. Some suits have a very slender build.Some suits like Taichi and Spidi have longer legs and arms,,some suits have a bigger mid section for us slightly bigger folk. You can not fixate on one suit. Just because,, it has to fit you. If the best suit in the world does not fit it will not protect as it should.
So try them on,,, wear them in the store for the time you would wear it on the track for a session. Sit on a bike,,,TAKE YOUR back and chest protectors. Don't,,please,,do not think of altering a new suit until you have tried them all. After that it may not even be alterable,,properly and safely.
I would most likely buy a Pilot suit. Why,, because I would want something unique and fitting. So custom, for me, works. I like the way the Pilot suits fit people and their measuring system is probably the most copied. They are not cheap and have been around. But they are also not out of the world price wise.
Secondly,,,probably Racer 5. lots of extra for the money.
Third, I like the one design of Dainese,not sure they neven make it still, it has a little too much venting for me but the fit is good. I just have trouble with the arms being a bit long.
But you see how there is things you like and dislike. Pay attention to those things. The absolute last thing anybody needs is to be turning laps and being bugged by something. Think about this for a second. You are coming into corner 8 at CTMP,,your forearm is too long and bunching up under your glove gauntlet,,you're, down shifting and realize your fingers are numb,,,,,,,,yes it happens! Or your knee slider just doesn't go up high enough [velcro should go to the middle line of the knee] so you are having a blast dragging your knee through Temptation or the Quarry at Bogie,,,, only to find out you now have a hole in your new suit cause the slider was half on the ground.
Take the time and fit the suit. Make the track enjoyable all round. You spend a lot of money and time for a small window of fun,,spend the time now.
Not every suit will fit everybody,,THAT is a fact.