These guys are cash trees when you get a decent piece of the board. That's when you love'em.
On your dry stretches when nothing hits then you hate'em cuz that's when they beat you with monsters such as 83os and 79 suited. Since you have no fold equity, you must win the showdown. In other words, when they hit the board harder than you, there's no way to beat them. It's frustrating,but when lady luck finally gives you a good break, you're gonna make most money off these dudes.
Just don't get into big pots with them without a legit hand.