is87 vs. is86

[veedot]

hi kevin!
on several occasions you have mentioned the is87 as one of your favorite boards - by now you have probably tried the is86 as well.
how do you find the new model, how would you compare the top speeds of the two boards (given all other parameters remained the same)?
and range?
which board would you say is the real successor of the is87 - the is86 or is it maybe the is76?

thanks a lot,
v.