I bought a new 4.8m in 2010. It's used in the North Sea and trips to the west coast (Hebrides) once a year, and quite honestly has exceeded my expectations, especially in poor weather.
I couldn't afford Ribcraft's full build, so opted for a basic 4.8m and I rigged it myself. The boat came with a double jockey console. I opted to go for under seat fuel tanks (2 x 25 litres) rather than an under-deck tank as it suited my needs and my budget. That said, the glass-fibre fuel trays are expensive for what they are, but convenient for refuelling.
I also specified additional hypalon wear patches, grab handles and a windscreen. Since I've had it, I've added a bespoke 6' stainless steel light pole (which also houses the Metz antenna), stainless steel navigation lights on the console, usual engine instruments such as a trim gauge, and tachometer and added an auxilliary 4hp engine.
Engine-wise, I wanted a 2-stroke engine. I do my own maintenance, so wanted a no-nonsense approach compared to modern 4-strokes. The engine is a mint 2006 Tohatsu M60C running a standard 15" pitch aluminium propeller. I tweaked the engine to 70hp (uses the same block) and its a true work-horse.
This boat will run fine with 3-4 adults, but for normal use 2-3 up is fun. It's easy to tow, and can be garaged in a domestic garage (unless you opt for Ribcraft's A-frame) which is the dog's danglies.
Ribcraft as a company are okay to fine to deal with. In my opinion they cater for the top-end market where money isn't an option and customers choose a full rigged boat. I like good communication with a build of any sort, so unless Ribcraft have changed dramatically, it will be you doing the chasing, so be warned.
Capable boat, well built, deep v hull suits most UK sea conditions, easy to launch and retrieve, looks good.
Expensive from new, basic without extras, jockey console limits seating (the temptation to go up to 5.3m is worth investigating), communication could be better.
When I spec'd my boat I also looked at Ribquest, and their 4.8m. I even visited their Sheffield factory, and was impressed with the level of attention and detail. Something to consider.
Any queries - let me know.