I was looking at the Avon 6.2 & the 6m Ribeye for some time and tested them both before ending up with the Ribeye. Had it for a year now & it has been a great success with the family of 5.
Have not tried the 5m but they do go well with out too much power on the back as they do not weigh as much as some because they have a moulded fibreglass deck not ply as most UK built boats so saves on weight!
I have been out in some really shitty conditions, one that springs to mind was last year after dropping off some people in the Hamble my wife calls me to say she is trying to hold the last place in the marina in Cowes but I need to get there as quick as pos, well we got over in know time in a really nasty choppy see & the Ribeye was just great taking it all in her stride.
Having said that I would be very picky if looking at anything prey 2005 as the deck had 2 metal runners running down the deck which seats & console are attached to & IMO there not so well put together as the latter ones.