Give Isospeed Professional Classic a go. I'd be interested to know what others think.
I find that it's just that bit stiffer but still very comfortable, and it lasts far longer than any other multi i've tried. Babolat Excel, NRG2, WeissCannon Explosive, Wilson NXT....
The only gripe I have is that it doesn't come in reels. Not sure what the plainer Isospeed Professional is like and that does come in reels. Quite a bit cheaper than other multi's too.
Give the Prof Classic a go, see what you think