I had this issue in Wales the other week
I flat refused to touch 95 I ended up settling for a mixture of v power and BP ultimate and ran on my 95 map to be on the safe side
Then filled up with v power asap
Why not something mad like Caterham r500 or something
You only seem to cover 3/4 thousand a year in your car
And one of those would hang of the back of most things
Josh the 2 people I know who owned e92 m3s sold them feeling mehhhhhh
I haven't driven one so it's just friends opinion unfortunately
However I can vouch for the r35
Save up a bit longer buddy there fricking awesome
And it's not going to lose much