Great site and even better app. I have just purchased my second ever RIB - a 5.1m Ebbtide with 90 HP 2 stroke. I also have a couple of other boats, one being a SIB :-)
The only other boat I have known to accelerate like my current RIB was a Flatacraft Force 4 with a 50HP 2 stroke but even that didn't take off like this. Has a pretty shallow V and did a fair bit of chine dancing when trimmed but super fun at 3/4 throttle.
Anyway, that's all for now but no doubt I will have lots to say and ask over time.