RE: iSonic 87, 94 or 101
It's a good question, and one I was just thinking about the other day (having had a great iS101 session) - for ride, the iS101 has much more of the S100's versatile speed / range/ "do anything" potential; for "feel", well this is an interesting one as the feel of the iS101 is a little different to the S100- but in the same way the feel of the S100 was very good (and very popular) , the iS101 actually has (to my mind) an even better feel - but noting that the classic slalom board feel of the S100 is maybe slightly closer in iS94.
If you loved the S100, have an S125 and S90, are tall and heavy and want something 7.6/6.4 and occasional 5.8, iS101 for sure.
Might have to see if we can put together another iS megathread, then we can include some more board info as .g.e.o. suggested to add more description to the style/ride/handlling of each version.
Cheers ~ Ian