Originally Posted by
FunkyStickman
By "extremely rare" I mean Shimano no longer sells the HG70, which is what 99% of them used. The HG50 is just not as good (I have both) and SRAM isn't nearly as widespread.
I intend to keep my bike 7sp as long as possible. No reason to change unless I have to. If it gets to the point where I have to spend more money to keep it 7, then I may go to 9.
Hmm, so there's a difference beyond the color?

The cassette on my bike (which may be original, for all I know) is still in good shape, but maybe I should step up my efforts to find more of them...