I've got some really worn pairs - the bars are quite thin now so I'm sure they'll snap soon. A couple have developed a some play in the bars so they rattle but I can't really feel it moving when clipped in. I must unclip my left foot a lot more than my right as that pedal is worn more on every set!
They're great value IMHO as I've never serviced them, just changed cleats - probably once a year as have a few pairs of shoes so they last quite a while. Bearings are a but rough on a some of them so may change them on ones with thickest bars. The ones on my commuter have done over 10,000 miles in last two years and were old when I put them on!
Khani - where did you get your bushings from?