You can tune it to shift even faster and firmer than Nissan did (i.e., no need for an altered valve body). Also has the rev match, which is bad ***.
Before you make a decision you should see if you can find someone with a tuned 7AT.
I only have two slight complaints:
1. the 7AT will automatically downshift if you are in the wrong gear as you drop revs -- thus you an never really be in the wrong gear.
You can certain manually downshift faster than the ECU will if you are entering a corner and will need to slow down, but I'd like to have the option to be in the wrong gear if I'm not paying attention
Really, it's a minor complaint. From the standpoint of being immersed in driving/racing, it's pretty handy to never be in the wrong gear if you slow down.
Of course, it won't upshift unless you command it.
2. If you want to down shift more than 1 gear it will occasionally hang just a bit, but I think that's more a matter of the VVEL logic playing catch up than the trans slowing down, tho, so it's possible that the MT does a little bogging too at times.
Otherwise, it's brilliant!