Hello everyone, I've been lurking here for a while and learned a lot over the years, but now I have a question and would like some opinions. A few years ago I bought the Walmart schwinn. I know most of you don't approve but that was all I could afford at the time. I just finish a season of triathlons on it and would now like to upgrade it. I only have about $400 and am trying to decide if I should get a bikes direct bike or upgrade my own. All opinions and thoughts are welcome.