When the ISIS bottom bracket standard first appeared (and was up against Octalink) they seemed to wear out ridiculously quickly and seem to still have a poor reputation today. The thing is though, when HTII came out people seemed to be wearing those out in weeks, but over time they've improved.
Is ISIS still as dreadful as it always was or are there some good units around (I've heard that the Superstar ones are pretty good)? Equally, does it have much future as a standard? I've found some cheapish ISIS Middleburn cranks but there's not a great deal of point in buying them if I can't get bottom brackets a year of so down the line.