Hi Nick
I have no experience of this model but to my knowledge the Verado range is very well respected. They claim to be the most economical in class and also that the supercharger gives great hole shot.
I don't know a great deal about superchargers fitted to petrol outboard engines, but on a big inboard diesels there is a band where the supercharger cuts in and then switches off (mainly because its there to get the boat over the hump because its been added to a reliable older designed engine to give extra oomph) consequently once running revs are achieved the clutch cuts out. This means that running a couple of diesels with superchargers at around 1600 for displacement speeds just at the point its due to cut in and not achieving cut out revs, the supercharger is likely to cut in and out and puts extra strain on the clutches .
Not knowing much about the Mercury set up on the Verado but without researching, I'm guessing there must be a rev range in which the supercharger kicks in and out. On the other hand it may be a bit more sophisticated and have electronic adjustment.
The reason I mention it is, if you are planning to own a boat that you want to be able to drive at differing speeds, it might be worth checking the system and how its set up. If not and all you want it is tick over or full chat, no problem.
