Benjamin, if you ask Ribcraft what they think of Ribtec then what do you think they will say ? so please be careful what you say about a boat especially if you don't have any experience of it. People do read these posts with a view to buying a rib which for anyone is major purchase. they need good sound advice from people who have used the boats, engines or equipment.
Actually Ribtec don't make a 5.45m rib.
Mine is 6.45m! (LOA 6.7m) and a deep v hull with constant deadrise which makes the hull very sea worthy, believe me! this is my second Ribtec.
If as JK says you meant Ribcraft then please amend your post.