Others have already voiced (or rather typed) my thoughts. Aegis frames are definately worthy of upgrading. Remember that Aegis' goal is to build a bike that will be the last you'll ever need to buy. Of course they are a bit shortsighted in not accepting the fact that we as a group tend to want more bikes regardless of how well built they are. The first place I'd look to upgrade is the wheels unless of course you're more than happy with them.