By Cointracking.com you mean Cointracking.info right? I have used them for a while now but I never paid to upgrade from the free version because I didn't really like their UI. I also noticed some inaccuracies in my PNL calculations and it kept telling me I had more coins than I knew I did. Hopefully your tax guy looked over everything and caught any inaccuracies if you had them as well.
I would also advise that people periodically export their trade logs to CSV to have copies locally in case the exchange loses their data, or worse, shut down.
LOL, yeah cointracking.info Thanks for pointing that out, just edited it.
I had to go through everything and fix the inaccuracies, then had the accountant finalize everything. The UI is a bit to be desired. It took some time and configuring to get everything right, but in the end I think it was a great solution. I'll stick with them till something better comes along.