The Akrapovic is lighter, looks better but sound wise there is nothing in it really. When looking for a TCR it was a nice to have but not a necessity, having DCC was much more important to me. The extra cost of the Akra exhaust can easily push the car over the 40k mark and then you jn for much more tax, i'll stick with my stainless system thanks.
Just get a decent TCR with DCC and other extra options as i did, if it comes with an Akra exhaust then bonus......but not essential imo.