I have two halfbuilt and 3 or 4 Fujimi sea kings sitting in boxes athome, and 5 revell sea kings pluss a score of the Airfix ones.
Revell is good, so is the Fujimi one, Revell's is the westland version with Short sposons. It has VERY fine surface detail, but raised rivets that need sanding off, as does Fujimi and Airfix...
The revell has the newer Composite blades and possibilities of new and old radars, sea skua missiles, but only german decals GRRR!), 5 and 6 bladed tail rotors and strake kit. It has all the windows and "lumps and bumps" for all westland built machines, as well as the SAR Cabin interior. and the revell cockpit is EXCELLENT, get that? EXCELLENT!! Seats are a bit wanting, but otherwise correct style collectives and cyclics as well as pedals, good decals for the panel, or relief if you so choose, so I'd say with a few minor glitches it is an awsome kit. If I had access to my USN boxes, I'd send ya the sponsons outa those, but then again...
Hope that helps!
(Death: if you're up and running, I have not forgotten you, but have been incredible busy these last two weeks... Will get stuff sorted on Saturday!)