A few boats stand out for me and I've seen a few now after 3 years of the Anglesey cruise and spent TOO MUCH time on here. Though I am no expert, not in the trade and have not skippered all that many. On balance of cost/build/resale/reputation:
For a sub 6m for towing and launching. A 585 ribcraft or 5.5 Delta Dash (rare as rocking horse poo) with a max hp Opti or 140 suzuki for the 585 and then a 125hp Opti for the Delta.
For a 6.5m an osprey V max, but I'd want a 200 + 2 Stroke, or bigger 4 Stroke. (Not sure what 4 stroke it would take though)
(2nd choice, We run a 6.3 Humber Ocean Pro, with 175 Opti. Nice boat, awesome hull, lovely engine, but an Osprey would edge it, it's a bit more £ though so our Humber is second choice.)
If I had unlimited money I'd be heading to Scorpion and then on to Goldfish with a lottery win
(Point to note, I like a high sheerbow (the Delta and our Humber have that). It was a pet hate on our old Sea Rider 5.4 that at displacement speed even in a small chop or in the rough water at speed water comes over the front. A bigger problem on the smaller sub 6.5m boats)
I'd also have two jockeys with a bench behind. Just a good balance of seating, unless you long distance cruise a lot with adults 4 or more, then take 4/6 jockeys. For fair weather boating and family, I'd have a bench behind.... As we do. Either wrap around at the rear or a switch back for watching skiing etc... As we do.