I'm afraid I may have to replace my Ultegra 6500 shifters (one is broken) and I am on a very tight budget.
It looks like my options are:
Old Ultegra shifters ~$120
Old 105 shifters ~$90
New Microshift shifters ~$80
New Sora shifters ~$130
Used tiagra 4500s at LBS ~$50
What would be my best option out of these? Obviously I want accurate smooth shifting, but it is also important that I'm not replacing the replacements in the near future.