If you're happy with it, then it really doesn't matter.
Personally, I think Raleigh's are decent bikes, but tend to be heavier than other brands. The Company has been around for a long time and I believe is the oldest bike Manufacturer still doing business. So, they're no idiots.
Had you asked before your purchase, I would have said to go test ride as many different brands as you possibly could because fit is more crucial than price. Plus, the $500 price point is highly competitive and you would have a lot of bikes from which to choose from.
Truth is, at this point it doesn't matter, you are the proud owner of a nice bike. Now, go get it and you dirty!
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger