You will find that the F-16 would be more demanding to sail than the F-18 due to its narrower beam, much lighter weight and still a very powerful sail plan. The F-18 is definatly more flighty than an F-18 or even a T. When graced buy a gust, a T will accelorate a lot more than healing due to its beam. The F-18 will do like wise to an extent due to its weight. The F-16 whilst taking advantage of the lighter weight to accelorate will still heal quicker than an F-18.

The loads on the mainsheet and especially the spinnker on the F-18 and 16 are a lot lighter than the T.

I have sailed Ts, F-18 and F-16. No doupt which ever one you buy, you will enjoy realy enjoy the boat. Most important factor will be what is raced localy to you. If it is F-18 Tiger for example, don't get to hung up about a Tiger over any other F-18. Likewise with F-16.

Hope this helps