Had a few different ecus now, as for fast on WOT even carbys are so propoganda time aside. Rom is a good option for you cheap perfect drivability plug her back in, Id seriously noty get suckered into all the extra wank functionality of roto idle antilag data logging for a street car its great for the pub wank talker conversation "my wanker ecu has more wank than yours blah blah. The next 3 cars I have are all going pfc DJ. Using power FC you leave you options for tuners open as most of the locals are capable of tuning them, the specialised "only one person is the expert" in a particular type may paint yourself into a corner later.
That aside can anyone think of a reason or two why a 26 DJ cant be wired over a 20