I have just now switched to Blogger Beta !! ..The feeling is good ..it seems more faster & better interface to me than earlier version of blogspot.com !!
I am not sure why but I always have a eagerness to try the Beta Versions of softwares which are Applications & not going to harm too much to my OS. So its ok to try ..you always gain over the earlier versions & come to know about the new interfaces/features ahead of production releases. It keep you ahead of competition as well sometimes.