Ok so this is really for my family bike (I don't tour YET) but I am not really satisfied with the standard choices out there for 9 speed Shimano cassettes. I am riding a Marin Mill Valley (compact frame flat bar road bike) and often towing my son on his trailer bike and we have some (ok there is no flat here) hills so I some times feel like I am running out of gears with a 12-25 on the back and a road triple on the front (52/42/30). I know a couple of things about my riding of this bike (family and commuting riding) and #1 is that I NEVER ride in the big ring so I was thinking that I could switch it to a compact double if I could only find a cassette with more teeth in the lowest gears. MTB cassettes are an option but I don't think I need a 32 or 34 and I also would NEVER use the 11 and for that matter a 12 doesn't seem useful to me either which brought me to the Sheldon Brown and the Century Special which is 13-30. My goal will be to switch to a road compact double and change the big ring from 50 to 48 and have the small ring of 34.
So what is the quality of this cassette? At $100 (currently due to Shimano's lack of 12-27 supply) it is a little spendy but if it is going to last and is the right gearing then I am not so concerned about the price. Anyone using one of these and what do you think?