Fisrt of all, It's battery with two "t's", but that's California public schools for you.
In addition to the 6-cell battery and the bluetooth transceiver, the 1000HE has the n280 processor with a slightly higher clock speed (1.6 vs 1.66) and higher FSB (667 vs 533). The keyboard is slightly different if I remember correctly. The battery alone is definitely worth the extra $25 and you shouldn't balk at the purchase because of it.
The $25 difference is more than justified by the improvements on the 1000HE.
Mainly the points that convinced me to get the HE over the HA or the new AOD150 are:
Newer, of course.
"Chiclet" style keyboard - offers better spacing between keys, 92% of normal laptop, and a half-sized "correctly" positioned right-shift key.
Larger and even exhaust port
7 to 9.5 hour battery life - instead of 4.5 or 5.5 hours
10.2" screen - that's 1.3" more than on my AOA150
Better overall ventilation and lack of a steel cage over the vent ports for better intake
802.11n @ 2.4 GHz + Bluetooth - The addition of N at least allows me to connect to some networks that I haven't been able to before. Bluetooth is nice: I can use my BT headset with it and pair my cell phone with my computer to backup data/contacts.
User accessible panel to HDD and RAM - huge improvement over my old AOA150.
Super Hybrid Engine - love the addition of this since it allows for the CPU to be underclocked to conserve power just like on my desktop. Also allows for a slight overclock so some full-screen streamed videos aren't as chopping.
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