Which notebook is better the toshiba satellite l650 09m or the acer aspire as5742g-5464g50bn acer aspire as5820tg-524g50mn or the hp pavilion dv6-3079tx

It really depends on what you want and need. These 4 notebooks are equally and closely competitive as each other.

Ranking of these 4 notebooks regarding their specs:

Toshiba Satellite L650:
CPU (Processor): #4, but may have longer battery life
RAM (Memory): Same
HDD (Hard Drive): #1 (640GB, biggest capacity)
Graphic Card: #4
Battery: #2 (unknown, but estimated)
Bluetooth: unknown

Acer Aspire AS5742G-5464G50Bn:
CPU: #2
RAM (Memory): Same
HDD: #2
Graphic Card: #1 (newer and more advanced technology)
Battery: #4 (only up to 3 hours)
Bluetooth: No
+ has bluray drive

Acer Aspire AS5820TG-524G50Mn Timeline:
CPU: #3
RAM (Memory): Same
HDD: #2
Graphic Card: #2 Same
Battery: #1 (up to 8 hours)
Bluetooth: Yes

HP Pavilion dv6-3079TX:
CPU: #1
RAM (Memory): Same
HDD: #1 (500GB, but 7200rpm (faster))
Graphic Card: #2 Same
Battery: #3 (unknown, but estimated)
Bluetooth: Yes