well, back from the shop I bought brand new 2009 IS101 and IS111 and I'm waiting for the 2010 IS121 carbon.
the idea is to keep the IS 111 with freerace 6.6 and slalom 7.7 in my holiday house with range 14/24 knts.
and use the combo IS121 (8,3) and IS101 (6.1 - 7.2) in the range 10/18 and 18/25 . So I can cover a wide range which is typical of the Adriatic see and garda lake.
I have got SL4 36 - 40 - 44
I tryed several times all three IS this summer and others SL boards as well.. IS are the best...
sold my two Falcons.
thanks to all for your advice.