One thing we found when looking at Whalers was how restrictive the current maximum hp ratings were and how many people put larger motors on. We have a captain friend who loves Whaler's but in every size boat he was recommending a larger engine than the plate allows and than Whaler will sell with. Basically their limits are 11'-25 hp, 13'-40 hp, 15'-60 hp and 17'-90 hp. With one or two people those are probably adequate but with full loads, are slow to plane.
Certainly Whaler can't be beaten when it comes to durability.
As an alternative if one is going to 16' or more, in South Florida you see quite a few Dusky's. That's what N4712 has as his play boat, ski boat, everything boat. They're sold factory direct so are less expensive plus you have a full choice of motors and aren't limited to Mercury.
I'd also comment that in outboard RIB's, I've always been very impressed with Novurania and their quality.