The Toshiba and HP will have similar performance thanks to the i3 processor, 3GB RAM, similar ATI graphics cards and other shared components. I would usually lean toward the Toshiba because I prefer their designs and I've always had good experiences with them, which isn't the case with HP....
But in this situation, the HP has several additional features that may be important to you. In particular, the HP has a faster hard drive, Altec Lansing speakers, total of 4-USB ports and 1-USB/eSATA, and the ATI HD 5470 graphics card (with 512mb DDR3 video memory).
The Toshiba has a slower (5400rpm vs. 7200rpm) hard drive, and only has 3-USB ports, one of which is also e-SATA. It has the ATI HD 5145 graphics card, which has performance similar to the HP's 5470 in most areas. The 5145 is actually just a renamed last-generation ATI HD 4570. As a result, it is only capable of DirectX 10.1 and is manufactured using a 55nm process. The 5470 is DirectX 11.0 capable and it is made using a smaller, more efficient 40nm process.
The Toshiba does have at least one thing going for it- a standard 2-year warranty on that model! The HP comes with a 1-year warranty standard....
How much price difference between the two?