Since people are currently paying upwards of $2,000 for a 6920 right now I'd say you made a mistake if you ever plan to sell it (and the Colt being offered was an LE6920).
However, if your Bushy is a shooter rather than a collector then it's your own personal preference.
Personally I would have opted for the lifetime warranty, M4 feedramps, RAS marked upper, H buffer, proper carbine height FSB, milspec barrel extension, and the assurance that your barrel and bolt was properly magnufluxed and proof load fired per the milspec of the Colt. But hey, that's just my own jaded personal preference
People like Fords, Chevys, and Toyotas. For evey Colt advantage I can list someone could do the same thing with Bushy. If you are happy with your rifle then everything else is secondary.
Edited to add: An LE6921? Who is the dealer?