Hi Peter
I do not have an up to date answer so best that you ask him for a view on your shortlist. I know he does NOT recommend Emerald after a number of nasty experiences. In my case they had not actually finished the software for the cylinder trimming I needed and they claimed to have!
Processor speed was behind another significant issue on a high end engine.
Emerald is cheap enough/ good enough for simple FI builds, but these days there are better options in every dimension. I used to be a fan and used them for years but they are now out of date and the tuning experience is hit or miss. If in doubt shortlist ECUs and ring the UK distributor and ask them for 3 RRs they recommend.
Eric