If you can find a competent installer they'#re probably a quite decent ecu and not too badly priced.

I've only used a couple on Subarus, but I found the software truly dreadful.

Although I think there is a user on here, cant recall his name who think the GEMS is fantastic and software great too.

But I've used a lot of ecu's and GEMS is right down at the bottom of my list for well designed software.

But if you're not tuning it, then that aspect doesnt really matter. What matters is that whoever is tuning it, can make the most of it for your needs and application. That applies to any ecu.