Unless you are light, forget about the Hobie 14 and think about a Hobie 16. Hobie 14 do not support more than one adult, and a light one only. Hobie 16 are a little overpowered for one person, but manageable.

In the small cats category you have the Wave or the Dart 15, both good boats, rotomolded, indestructible, but heavy. They both can do 2 adults as well.

The Nacra 5.0 or 500 is longer, more powerful, still manageable with 1 crew, but capable of 2. Heavy however.

I personally don't like the Hobie 17, but some people do. This could also be an option.

An old Nacra 5.2 is a lot of boat, but a bunch of us did/are sailing this boat alone. But be prepared: it is hard to get back on its feet by yourself after a capsize. But those are fairly cheap and really robust, they take upgrades really well (spinaker!). Also, come with daggerboards, not the ideal if sailing in shallow water.

In the light cat category A class are *really* light, but those are formula one boat: expensive, light, fragile, highly technical, racing only, one crew only. And at 18" long, with a 9.5 meter long mast I'm not sure if it qualify for "small". This said, for recreational sailing, an old non competitive A class is a lot of value for not a lot of money.

The Formula 16 (and Taipan 4.9, there are some in the classified) are light lively boats which can fit one or two people (but not two big blokes). Ideal for around the can racing and fun sail. But I'm biased, I own one.

Hobie FX-one are fun boats too, F16 are lighter, but still ood value for money.

And there are more... Please tell us where you are and what usage you will have. Racing? Jumping waves and reaching back and forth with the windsurfers? Day trip to nearby islands? This should be taken into consideration before making a recommendation really.