I am a happy Cobra owner :-) On my 2nd but to some degree it depends on the age and spec of the boat your pal is looking at.
Plenty of fans and critics as with lots of marques
- may be marmite RIBs?
Up to 2006 they were made by Dave Picton in Bridgend and post that, in Dorset when he sold out. The originals are a heavy build up with later ones allegedly a lighter build with some claimed hull flexing in dry stacks - I have no first hand knowledge of these or the 'claims' or know if there is any truth in it. Seating and storage space is good
There have been some minor developments to the hull profile/spray rail arrangements over the years and a very nasty accident with a high powered version a few years ago
Both mine were 'HD' spec (no fancy bow cushions, rear bench seating or moulded deck)
The Welsh ones well built but with very poor electrical installations.
Wide beam, deep V and need plenty of power
Mine is a mere 6.0m, now with a Merc F150 4S, and is used most of the year-round for diving on the north east coast and west of Scotland and is very capable with 4 fat boys and dive kit. I have been caught out with some unexpected, pretty grim weather, and never felt unsafe.
She is now 12 years old and still in good fettle, in spite of extensive use incl dragging it 2500 miles to Greece annually for the last 12 summers.
PM me if your friend has any specific question I can help with.
Jeff