Thanks for the feedback everyone. This has been very helpful. I am going to stick with the 7 speed and get the SRAM 12-32t. While I slightly like the range of the IRD 11-32 better, I like the gear stepping of the 12-32 better. Plus, I don't really think I will miss the 11t cog much, if at all. And, if the cogs are loose on both my current and new cassette, I can always replace the 12t on the new cassette with my 11t from the old cassette. This will be my first cassette and chain replacement, so wish me luck.