I've used this unit for a handful of years - it works (runs) fine. The evac on the rear is nice because it fits both the big shop vac and small shop vac hoses. The "hole press" which puts holes in the paper to allow the sawdust to stay mostly in the machine and travel to the shop vac is very handy - and needed.
The rub - I've put some $40+ into buying new/replacement "plates" that hold onto the sand paper. The front "clip" is flat out a bad design - it is plastic so it wears poorly as you put sandpaper in - and worse - the "rotation" of the clip actually pushes the sandpaper OUT of the front.
I have used a $5 sander from another vendor with much, MUCH better luck holding onto the paper...
Thus - a 2 star rating.
Lightweight, Powerful and easy to load. Not sure how durable this sander is but so far very happy with it's performance. The dust collector works very well, is easy to empty and the sander is very powerful for it's small size. The handle is insulated and comfortable and keeps the vibration to a minimum. Currently using the sander on a large project finishing multiple sheets of plywood flooring to prep for urethane coating and fine sanding between coats. Time will tell how durable this item is but so far am very pleased with this sander.
The overwhelming majority of power tools I own have the Ridgid name on them. Typically I feel they are well designed, durable and carry an unbeatable warranty (as long as you register them). With that being said this is one Ridgid tool I can't recommend. The dust collection is about worthless. After a couple hours of use there is easily double the amount of dust on the outside of the sander (mostly covered) than in the dust collection (almost empty). The dust collection is coming apart after a small handful of short uses. If you choose to buy this you'll want to leave room in the budget for a sufficient respirator. It's mostly uncontrollable. It seems to have good power (the only reason I didn't give it one star) however I'm not sure what good the power is if you can't control where you're sanding. The only application it maybe tolerable for is large surfaces, and only if you're ok sanding the outer edge of the surface by hand. Several review claimed it has a 12' cord, mine only has a 6'. On a side note I didn't have the issue of sand paper not staying put as many of the other reviews, which may've been a result of limited use. Thankful Ridgid has a 90 day no questions asked return policy.