so i have two early 90s cannondales that were both equipped with shimano 105sc downtube shifted 7-speed. i tore one of these bikes down mid-summer and was planning on getting ridiculous with it but have now decided i just want to ride the thing.

i have the opportunity to grab, on the cheap, a complete shimano RSX downtube shifted 8-speed group[95ish?] in near mint condition. hubs are laced to mavics. can anyone comment on the shift quality/component quality of the RSX group compared to the, IMHO, near perfect 105sc 7-speed?

i have read mixed review of the RSX group - some say its early sora[read: junk] and others say it was a great entry group?

im looking for experience here more than opinions based on things read on the internet.

thanks in advance.