Hi Sheri,
Here's a link to the
Dirt Devil site. I assume this is the same unit offered by Heartland. It looks like mine. I think at one time, they also used some Dometic units. Last I recall, the specs on the motor between the brands were comparable.
Regarding the sliding tray, I am very happy with mine. By using the totes that I do (pic 1, pic 2, drawing 1, post 1), I am able to stack them 2 units high on the slider and they stay stacked and have never shifted. Whereas a load on the floor may shift a bit easier. I found that the slider allows me to better utilize the space. If you don't carry a lot of stuff, it's not as important of an item but after 1 year in the unit, I found I was carrying a lot of stuff and added the slider.
Good thing with
Innovation Industries was that they build you whatever size you want. So I didn't have to fit into an off-the-shelf size and not be as space efficient as I could with a custom unit. I store even more stuff on both sides of the slider on the storage area floor. I left about 8" on the front and and left with about 20" on the back (by the bulkhead wall).
While this is a great option, it is something that can be added later, more easily than the central vac. If we upgrade coaches one day, I'll have to ask nancy if she wants the central vac again or if she wants to put the Dyson in the trailer and get a new model Dyson (or other brand) for the house.
Best of luck to you. Exciting times for you I know.
Jim