As much as I hate toshiba laptop, if they are the same price, I would go for the A10 with 1600mhz ram.
Reason being that AMD Trinity APU is severely bottleneck by memory speed. It was found that you can gain at least 15% in 3D performance from the APU if you boast memory speed from 1333 to 1600 mhz.
Further, the APU from 7660G can actually handle modern 3D games at low to med settings. You can now overclock the 7660G with AMD overdrive to achieve even higher performance.
Having said that both machine can play Blu Ray jsut fine, there would be neglible difference and I doubt it would lag.
If you are just watching movies, the 17" screen is nice. It has higher resolution too.
If you do decide to get the Toshiba, I would highly recommand to wipe everything clean, reinstall all the AMD drivers. Toshiba has way too many bloatwares.
As for actual 3D gaming, I know I could play Borderlands 2 at med to high setting ith the 7660G.