I've been using V6 (v5) for a couple months now. I use custom settings of: 6, 20, 100, 70, 80, 90. I have tried all the options including mega memory and the settings I listed work best on my phone. I also use bulletproof launcher setting. Beyond that, I do have SD-booster installed set at 2048. I have applied the vold.stab hack to switch how the X2 see's the internal/external memory. Lastly, of course I have frozen anything I didn't need with titanium. My free memory ranges between 110 and 90. Sometimes I do a cache wipe, wipe dalvik cache too. Also, I have a widget called Fast Reboot I utilize to free up memory also. I rarely have any audio problems honestly. My biggest gripe would be Slacker/pandora/jango don't always work properly or hang up. Don't know if that's a DX2 issue however. If this happens I either reboot or close all running (non system) apps with system panel and it seems to fix the problem. Also, I recommed clearing cache's and data on finicky apps. Seems to clear up some issues for people. All in all, I can't really say my DX2 is any buggier than the 4 different DX's I had in the past. Slightly different issues, but no worse. Overall, it's a better, faster phone IMHO.