Product review (5 stars): Worth the Extra Money!
It's great for places where you cannot vent your dryer outside.

I moved into an apartment that was washer/dryer friendly if you brought your own. But they told me you had to buy an indoor vent. I did quite a bit of research and landed on this because based on MANY reviews I read, this model was easier, cleaner, and more "friendly" than the other canisters you can buy. In the other kinds, apparently lint flies all over the place unless you use a nylon to catch it. And then I can see it being annoying because you'd have to keep bending down, stripping the nylon out, cleaning the whole thing, and then reassembling it. I don't care who you are - going through that process every time you need to clean the filter is a pain in the royal rumpus and no one should have to do that.

This indoor filter can sit on the floor OR be mounted to a wall. (I prefer mounted because the space on the floor is so tight). It's self contained with a lint trap already built in. All someone needs to do is turn that handle a few cranks. It cleans all the lint off the screen and drops it into the removable drawer below. After every few dryer usages, you pull the drawer out, refill with no less than 1 inch of water, and you're good to go!

It literally can't be any more simple than that. It is definitely worth the extra money I dropped on this one. Bonus! I live in Michigan and I saw it shipped from California. I thought to myself that it was a bummer because it would take well over a week to get here. As it so happens, it got here in LESS than a week! Awesome seller!

Some things to be aware of:

 Any time you vent indoors, the area it's in will become extremely warm and moist. This can be nice in the winter time when it's cold and the air becomes dry. In the summer, though, be prepared to turn on your air conditioning to disperse some of that heat if you run it often. If you have a huge aversion to the dampness, invest in a dehumidifier. For me, the dampness hasn't been an issue whatsoever (and my laundry room is pretty small.)

 Indoor venting is probably not as friendly to people with breathing issues. For example my sister has asthma and I wouldn't really recommend ANY sort of indoor trap for her. I won't pretend to assume ZERO lint escapes from the trap.

 Don't worry if you've never hooked up a washer before. My boyfriend hasn't ever done anything remotely close to this and he managed it easily enough. The set comes with instructions for how it's assembled.