Oh, I have loads of experience abusing my cash flow for boat stuff! Here's my 2c:
For general boat stuff WM and Defender are certainly two of the most convenient choices. Defender in general has better prices, but not always. What I have found by comparing WM prices online is that, in general despite the rant, their prices tend to be competitive....except they seem to hide landmines in their pricing structure. You will find a dozen things that are competitive and then one that is 300% more expensive than everyone else.
Some other suggested vendors:
"Sailorman" in Ft. Lauderdale, an amazing selection of used gear
-- great fun to go wander around and you can also order on-line. Has been "improved" in recent years so has lost
some of its funky charm.
Express". Great source of marine diesel parts
. Good prices, very knowledgeable, great service
Also, many so called "marine" products are over priced rubbish. You can often find the same thing in other markets, like the RV or home improvement market, for dramatically lower prices.
You can sometimes run across some great finds on eBay. I've picked up some great fishing
gear here and replacement parts for marine electronics
specific but, Amazon, has the most awesome cyber-storefront on the planet. Some really great search tools too. They have an especially cool facility for finding nuts and bolts. I've bought lots of small general parts and liveaboard
stuff via Amazon. Most cruising guides
are available here too.
Speaking of cruising guides
and such. "Bluewater Books
and Charts" of Ft. Lauderdale specializes in this sort of thing. Very knowledge staff (all cruisers), huge inventory, great service. Their web site is a bit clunky, but if you have trouble finding what you want just give them a call.
PS: Noticed that your ride is an H37C. Great boat! Used to own one. Got pics?