Which of these would be the BEST choice?

Question

(Price is not a problem)

http://www.circuitcity.com/ssm/HP-TouchSmart-IQ506-Desktop-PC-IQ506/sem/rpsm/oid/214075/catOid/-12962/rpem/ccd/productDetail.do

http://www.circuitcity.com/ssm/HP-Pavilion-a6500f-Desktop-PC-KQ495AA-ABA/sem/rpsm/oid/213659/catOid/-12962/rpem/ccd/productDetail.do

http://www.circuitcity.com/ssm/HP-Pavilion-a6554f-Desktop-PC-FJ464AA-ABA/sem/rpsm/oid/213650/catOid/-12962/rpem/ccd/productDetail.do

Answer 1

I've used the touch screen pc in a store, and it was pretty laggy. I would stick to one of the others; if I were you, I would take:

http://www.circuitcity.com/ssm/HP-Pavili...

Answer 2

** Update **

OK the 3rd one (HP Pavilion a6554f) is considerably better than the others, go with that.  Faster processor, ton of RAM, and it's upgradeable.  The integrated GMA 3100 is fine for stuff like photos, movies, web  etc.  If you get into 3D games like Call of Duty 4, Half-Life 2, etc then you'll need a video card upgrade

***

For what purpose... What primarily will the system be used for?

General web browsing, word processing, email, photos etc?

Gaming?  

Movie editing?

3D design work?

The answer could greatly affect which system to pick.