You get what you pay for - remember that. Streem isn't around here much because they are a 'white-van' speaker. If you have them - no offense. If you want a large speaker and want to pay as little as possible, maybe these are for you. But I warn you, you found this site, so you'll be reading a lot on here, - those Streems will be upgraded as soon as you have more money.
Personally, I'd check the used market. You can get a lot of speaker for $700 - certainly ones much better than Streem.