The output from a 1/3" sensor such as that of the DCR-SR100E is like that of a DSLR, better noise control and image quality. The 1/6" sensor such as that of the DCR-SR60E is crap in low light i.e. anything that is not outdoors is basically crap like the PnS digital cameras. I am speaking from experience, both camcorders will give images that are world's apart in image quality.
Given the option between the Sony DCR-SR60E and the Panasonic SDR-S150, I would go for the Panasonic. I have had an opportuity to try out the video image from it at Cathay Marina a long time ago, when the earlier version called SDR-S100 was available. The image quality was indeed sharp, albeit with some noise. But compared to the HDR-S100E, the HDR-S100E will be better by a significant margin.
I have been reading up on AVCHD too. Somehow, I get the feeling that you will need some powerful hardware convert the output effectively.