No difference in the sound chip so I would go based on price.
Yup. The only difference I can see which is of a big deal to me is the igp since I won't buy a dedicated card for the mean time. So, it's hd4200 with 128mb side port memory VS 4250 without sideport memory.
ps. Ahm... about the audio thing, is the difference between a 5.1 and 7.1 noticeable if one will only use a 2.1 sound system?