The ECU you use is really dependant on whos doing your tuning, if your tuner has alot of experiance with a certain ECU you will probs get best result from that. Never used P&P ECUs however im not a fan, there not really optimised so tend to run a tad rich with loads of timing put in to make decent power. Each to there own though and they do seem to work most of the time. I have used Emanage Blue though on my old starlet, did the job fine, 12x12 ignition and fuel maps with adjustable fuel cut, doesnt remove top speed cut though (not a major prob as speedo convertor did this) did the job fine for me running 1.5/6 bar on a td04 with stock internals ! (mapped by Ricky@Race-Tech) Emanage ultimate is very similar to EMB apart from having a 16x16 mapping table so can get a much more precise tune, also removes top speed cut and has facilities for launch control and changing rev limit, this can also self tune to a certain extent if you set it up right with a wideband and set a target for it. IMPO for your setup an EMB will probs be best bet, ultimate would be overkill (again IMPO)