I am currently riding a 70s Fuji Regis. Though it worked fine, I found myself dreading to ride because of needing to carry it up and down 3 floors each time I ride. So I am considering an upgrade. I was comparing the big brands and most entry level roadies are around 700-900. But I found in a local REI that some diamond back bikes tend to have better components for the same price. I haven't had the chance to try out the big brand bikes yet, but I did get to try the diamondback Airen2 at the REI with 105s, which I quite enjoy more than I do with sora/claris bikes (off brand) at the store. Though I will surely try out the big brand bikes before making a decision, I would like to ask - are there reasons not to buy these not-as-hot brands for better spec at the same price? Resale value? damage prone? what should I consider and how will you choose if you were me? I am planning to ride this to work. It's a 45 mins ride each way. Thanks!