I've had mine for almost 2 years now. They're OK for the price, however I have run into a couple of issues.
It's probably a combination of both my (non-existent) room treatment and the monitors themselves, but I've found that there's an annoying frequency in low-mids that is so boomy, to the point where I don't really like using them for production anymore. I never noticed it at first, probably because my ears were less trained, so I'm still glad that I chose them for my first set because I knew that I wasn't really ready for something more expensive.
I much prefer using my Audio Technica ATH-M50x Headphones.