Well after suffering some very bad call quality I decided to try to get to the bottom of the problem.
Firstly my ping to 2talk:
Pretty stable. Thoughts?
Then I found that my router wasnt QoS'ing my traffic so I had to modify the QoS rule.
Now it seems better and Bria on the SGSII works beatuifully. I cant say the same about SGSI - maybe it was a CPU processing power thing.