7k+ on a 5 still easily mate!
Just because the M3 is a drop top and i'm not a fan personally i'd take the Evo, also the 5 is one of my favourite Evo models

the 5 is cool in standard form!!!
but the m3 is worth more and should be easier to sell

especially as now its coming up to summer

and estoril blue with low miles is WELL sought after mid year
so to cut it short, dont be fucking stupid!!!
unless of course you WANT the evo to try it for yourself