It's an understandable concern, but if the beta label was the only red light keeping you frozen at the intersection, then you should know that the light turned green over the weekend. It's now safe to cross the street and join us in the bustling city of Froyo.
Version 1.0 of the ROM (link below) was released on Saturday and according to its dev, it's "stable enough to transition from beta status to a proper release level." Previous issues with Android Market have been fixed, the black theme introduced in beta version 0.3 has been fine-tuned, and of course the entire system is still fast and smooth.
I was already very happy with the way the last beta version was performing on my Streak, but the new V1 build is definitely the best release so far. Froyo in general has breathed new life into my Streak, which has never been able to hold its head up high when in the company of my HTC EVO (running official Froyo since August), and I see no reason to ever abandon DJ_Steve's ROM for whatever Dell pushes out later this year.
[Android @ MoDaCo]