Getting my friends a housewarming gift. I have an Arizer Solo so that is the logical choice for me to provide. Decently affordable and I can tell them how to use it. They like to have a lot of people around so I'm wondering if there is a plugin alternative that is in the same price range that I should consider. My three priorities for this gift: 1) Budget 2) Simplicity (use and maintenance) 3) "Quality" -- it doesn't have to feel like it's made out of titanium, but should be expected to work reliably If no suggestions will start them off with an Arizer, but somewhat hoping there's something that I've missed out there. Even better if it brings it down to $100. Thanks!