I'm also on Sprint in Orange County
Anyways, it turns out slower data wasn't caused by the Telus Radio. I guess the signal/connection was erratic that day. I reflashed the other radios to test and I was getting the same results. I'm on the Verizon Radio at the moment and it is going very strong. It may surpass the Telus Radio in terms of battery life but I'll have to use it a few more days. So as it stands, I'm definitely getting better battery life using the Telus and Verizon radio over the Stock Sprint. However, the VZW and Sprint radios gave me much more stable signal compared to the Telus in the places I'm usually at. I'm also experiencing no problems with the VZW radio so I'll continue to use it. If anything comes up I'll give the Touch Pro radio a try.
P.S. The stock sprint radio hard reset my device! Flashers beware, use a different RUU.