Everyone else has their stereo thread, so here's mine...
I just finished the install on Gosa's Moomba and an 04 X-Star. Mine's still under construction though.
Started with: OEM Kenwood head unit, Wet Sounds WS-420, OEM Kenwood 6.5's in bow, in-boat, and 4 Wet Sounds XS-650's in the stock cans. Had 4 JL Audio 10W0's (2 under each console) in sealed boxes, 2 4-channel Kenwood Excelon amps, and 1 1000W Kenwood Excelon mono amp.
The new equipment: With the same head unit and WS-420, added a syn 6, Syn 4, and 2 Syn 1's. For speakers I replaced the stock cans with a Wet Sounds 3-some powered by the Syn6, 6 XS-650's in the OEM in-boat locations powered by the Syn4, and 2 Wet Sounds XS-XXX 12's each powered by each Syn1. We built 2 separate ported enclosures for the XXX's. For power, I already had 2 Stinger SP1500D batteries, and added an SP800 this time for starting and accessories. I also added 3 Stinger charger/maintainers for each battery. I hid all the wiring for the chargers under one of the panels and ran a single 12gauge cord to a location in the ballast locker with a hook to hang a cord on. I've got a 25' 12 gauge cord that will be used to plug in the chargers. All I'll have to do when I get back to the dock or on the trailer is throw the cord out and plug it in.