The LX model isn't *that* loud with the 8 HP Vanguard Pro engine on it, but it is loud enough with the tractor running/mowing that I wear hearing protection. (I certainly couldn't put up with kids, the sucker is fine with earpro.) Ya gotta figure there's a lot going on with driving and mowing and blowing and sucking.
I lift the engine on/off myself, but I'm not that old either. I don't have the front wheel they now seem to come with, so that will be a purchase before Fall.
I read the Cyclone Rake is much more powerful than the LandPride PTO unit, and that the Cyclone holds a lot more, but other than repeating what's on OTT I can't say regarding the PTO unit.
The Cyclone I have is built well and lasted the previous owner just fine, though at that time the Kubota adapter for a 60" MMM was extra and I now own the smaller generic mount and the larger Kubota mount.
If your deck doesn't much sticks they may get "trapped in the tube." Not sure what people expect with that one, pick them up before mowing or hope they get mulched: it's not a tree vacuum, or a branch squancher, ya need a flail mower for those shenanigans.
As far as acorns and rocks, if you mow low they'll go. Raise the deck a little.
One more thing, it stores nice. I remove the engine (it has rollers and wheels into the corner), fold the bag down, and tip the trailer and bag upright. The tube is bulky though.