PM Micra Ed.
Or Ashills
A few are running the ordinary blue emanage - jimmyback to anme one..
Stevepudney is using the Emanage Ultimate with success and happiness
I am currently ECU hunting also.
Emanage is probably second option at mo but certainly a good option it seems.
If fitted correctly and mapped well they can see great results. Steve is running over 400bhp on his I believe.
Uses 16x16 mapping points. Apexi uses 20x20.
Great feature of Ultimate is can have 2 maps, and just switch between them.
i.e 1 map for 1bar and normal driveing.
1 for race and 1.6bar, or even race fuel.
Retains cold start features of original which can be niggly apparently.
Comes with data logging facilities if you have laptop - this is an extra cost for Apexi unit.
From my research and opinions and advice from others, I believe these are an excellent piece of kit. Very reasonably priced.
It all depends on where you are based and how far you want to travel.
These days Good Tuners can be hard to get so you could nearly decide your tuner and then see which ECU they map.
Still relatively new piece of kit, but good results seen by members on here.
Steve, Ed or others may add some actual experience and info for you.