The IM is so much better made than the JBJ, if you have the chance to check them out in person you would see. I had the JBJ 30 and it is pure junk, the glass is thin and really not that clear, the black trim doesn't wear well. The pumps run very hot, the top doesn't fit if you plan to use them, they are too short and are frankly dangerous of dropping them in the tank. The media baskets are useless and would have to be replaced. The stand is the worse I've ever seen, completely flimsy and doesn't wear well.