Well to contradict everyone else.
Ive paddled both and loved the pair of them. The flirt isnt a bad boat, its a bit on the heavy side and also requires quite a bit of weight to throw around but its pretty comfy and did everything it was supposed to. It is possibly the easiest boat to loop Ive ever paddled in.
Solo isnt a bad boat either, outfitting is nice and simple. Its comfortable and the plastic is absolutely bombproof.
In all fairness its a creekboat, what more needs to be said!
My only complaint is that I hated the rails on the boat, but then again I dont like semi-displacement hulls full stop as im too used to paddling playboats with nice sharp rails.