Hi Muerto,
Sony burners are very reliable, quiet and solid.
The 0811 is a new improved version of the CRX140E.
They have added burnproof function (anti buffer under-run system) but reduced the on board buffer from 4 to 2 Mb.
I have the 140E for about a year now and I'm very happy with it.
However, nowadays it might be regarded a bit slow by some people, with it's 8x4x32 speed.
I find it fast enough for my needs.
dervish