Not using Luxor yet, but like what I know of them, and also the vendor we are using on one asset.
My advice based on first experience is to make sure you have enough storage lockers. The package companies use a formula, but my property's lockers are close to capacity all the time with the "standard" formula, and residents don't move the packages out as quickly as you'd hope (remember the piles that stayed on your office floor...). So we are at capacity, and our vendor projects that packages will double at the holidays. We are already looking at adding another set of lockers, but wish we'd had better info prior to install. There should be data out there about different demographics and packages, maybe even through Luxor.