IMO I wouldn't use the apexi one as it need a wheel speed sensor to do use the various functions like different levels in gear and boost curve tuning. I had one on my Saff and hated it, I went and bought another Blitz SBC IC
Blitz is good easy to use does a holds boost pressure to the rev limit
or the Eboost which get good reviews from lots of people that use them and we sell them prices are on my website.
I've not used my one on my car yet so I can't comment on easy of use but the do look very good and I've been told they are.
www.rapidford.co.uk
let me know if you need any info.
Cheers
Daniel