I was completely happy with my N55 135is Dinan Stage 3. Well, except for that open diff. But I wasn't even looking when I came across this slick-top with single bump dash and manual seats - I had to jump. Delivery last night.
I haven't had enough drive time yet to really compare, but power-wise I'm not sure which is better. I need a week or so to really sort it out.
https://youtu.be/tzUucPYGoz0
https://youtu.be/6OMvM3XArPU