tl;dr: Party Reflections was 1) more expensive than necessary, and in a way that seems clearly designed to take advantage of the expected cost of modern weddings, and 2) not terribly helpful. More detail below.
Our experience with Party Reflec...tions wasn't great. For one thing, they're far more expensive than some other options in the area. (In some cases, four times the price of similar items and services from some local competitors.) And it's not clear what you get for the extra money. The equipment is fine, the delivery service is fine*…. But that's true for pretty much everyone.
More importantly, we felt squeezed for pennies. There was a possibility of rain on the day they set up the dance floor, so (without asking us beforehand) they brought along a tarp to cover it, and wanted to charge us $100 for tarp rental. (Which, by the way, was their cheapest suggestion for simply keeping the dance floor dry by about $400.) I mean, I get it—but that's like charging restaurant patrons for napkins. It's the sort of thing most companies would do just as part of the deal.
We also had some trouble communicating with them. They were slow to return calls when it was just a matter of answering our questions or getting things sorted out, rather than of sales or payment. And, unlike most of the other services involved with the wedding, they seemed not terribly concerned with simply being helpful. Finally, part of our setup plan for the reception required coordinating with them on delivery time, and that turned out to be too difficult.
In the end, Party Reflections has a good reputation in our area, and I'm sure you'll do well with them if you're willing to pay whatever it takes to make things go smoothly. But after working with them, my sense is that things get difficult if you have a budget. For what it's worth, we ended up getting a few items from another local service, Party-On Rentals, and our experience with them was much better.
*…Except that they didn't leave the tables in the right pattern or the dance floor in the right orientation. Admittedly, that might be a complicated thing to ask, but… I dunno. They do specialize in this stuff.