I had a Valliant V570 which I loved, not as deep a V as some hulls Ive had, but I had plenty weight in the bow and it handled brilliantly
, also because of the hull shape it was really easy to beach launch because of this , and also it had more length of tubes aft of the transom than usual, this gave the boat very early floatation for a beach launch which I found very useful indeed, infact if you started with 18" of depth on a fairly shallow beach, that was enough. Also, on the model I had the tubes were 500mm diameter which is slightly bigger than usual and aided the very safe feel to the boat, and improved its stability in the water.
Also having more tube behind the transom gives better flotation for heavier 4 stroke engines, again another plus. I never had to go near the tubes in 3 years with an air pump, their construction was excellent
The under deck tank filled easily from a filler in the bow locker, and I liked the quality of the GRP finish. For a 5.7, I found my Honda 90 gutless, but I think thats more to do with that engine, the perfect size would have been a 135 IMO
I sold mine for a little more than your money 3 years ago, so you could be in that territory for a similar aged boat
She was a lovely wee boat, and I'd have another anyday