Actually, I went the other way.

I tried the 930, 925, 735, 1020, 1520 and 830.
I still have the 830, the others were all returned.
About 4 weeks ago I ran across some comparisons (on youtube and written) between the 920 and the 1520 (much "better" hw, haha).
The youtube videos were particular an eye opener, showing, side by side, the 920 being fast on a lot of things than the 1520.
So, I bought a new 920 and for the last 3 weeks or so my 830 has been sitting back in it's box.

With the single exception of battery life, my 920 simply eats the 830 for a snack.
Much more responsive and faster on everything and not a single problem in about 3 1/2 weeks now.

Fred