I've had a Silver Lake for 2 seasons now, I love it. I use it ALL the time; sleds pretty much live on it from Nov1-May-something, made ~50 trips last year, not sure year before.
Still on original decking/glides. I got the expandable deck - the wood does freeze to itself once in a while, but it is easy to rectify - I have a small nail puller I keep in the tray under the deck, just pry the wing away from the main deck, pop, it is free.
The Full Lotus looks REALLY nice - but for me, not $2k nicer. The Silverlake functions great - ramp is collapsible, slides into its little channel under the deck.
A friend's Pro would not drive onto my ramp, for some reason. That's the only weirdness I've had with it - the carbide rammed into the leading edge of the ramp (my slides are kinda beat up, going to order some new plastic as soon as I'm done with this post). Dunno what was up there - I've put a different Pro on without issue, and all of my sleds climb up just fine.
One of my sleds is a pig, too - 13 Skandic SWT. A) heavy. No idea how much it weighs, but probably 700+ pounds. No problem. I'm not exactly light, either. B) the ramp was not designed with 24" wide tracks in mind - when the sled is ON the deck, the hooks are wider than a 15 or 16" track. With the SWT, one hook is directly under the track. I got around that by screwing a piece of wood to the end of the deck - it lifts the sled off the deck just enough that you can unhook the ramp. That's not Silverlake's fault, though.
Certainly not bashing the other brands - I'm sure they're awesome - but the SLP deck does everything I want it to do for a whole lot less $$$.
One thing I'd ABSOLUTELY recommend, though, are Superclamps, no matter which deck you order. A normal screw-down clamp would be a pain in the butt. I bought mine with Superclamps as rec'd by BCIL. It made sense to me, but having lived with the deck a couple of seasons (and screw-type clamps on trailers), uhh, yeah - get superclamps! I only use the front, tie down the rear with a strap through the bumper.
I cover mine. Dryish roads, they're fine without, and they get nowhere near as dirty as they do on a trailer, but there's still a lot of nasty crap floating around up there.
I also built a box for under my deck - sheet of plywood on the bed floor, rollers, big drawer on top of it. The space at the front of the bed gets kinda unusable - this way, I can pull the giant drawer out, put stuff in, send it to the front of the bed, and it is still easy to get once there/unloading.
http://sledecks.com/
Happy customer. They make good stuff.