1. What are you going to mainly using it for?
Gaming go for the Dell
Anything but High end gaming go for HP.
The HP can still game, but the E1705 is more upgradable. (Cpu,Gpu)(Core Duo to Core2Duo, 7800 to 7900GTX(with mod))
If you have the cash go with the E1705.
As for Brands i ca't say much.(I dont like either.)