I have used them both back and forth and I will tell you that wisbar3 is by far better and smotther, spb uses to much memory for me. I like music and watching movies and surfing net, so avail memory is a must (wish htc would have just put the memory in this thing, it would be the king of the hill) anyway spb ends up useing 2-3mb compared to 599.7kb for wisbar3 sure new diamond theme looks cool and I used it already but just not worth it to me. also some are creating diamond skin for wisbar3 right as we speak.