Well, come on. Do you think any Forum member is gonna tell you that you bought the WRONG bike?

I have several older bikes with Shimano 600, and enjoyed them all. Most bike companies used Shimano 600 with the same frame and fork that they used for the Dura-Ace "pro" level bikes, or a frame and fork that was of very similar quality. So, for under $300, you are getting a bike that ought to ride as nicely as many 2007 bikes that sell for $1,500 and up.

So, get out and ride...