I have had my FX for almost 2 years now...living in the Virgin Islands I get to do lots of sailing in all kinds of conditions...the FX does very well in 3-5 ft seas and 15-20kts wind as well or beter than the I-17 which there is one here...The FX is has a faster rating than the I-17...not the R...so unless you have first hand knowledge of the 2 boats keeping your guessing to yourself