I am considering getting a tv tuner for my acer laptop. I have heard of some lag issues with the usb tuners. I have 64mb of shared video memory (and usb2 ofcourse) but i don't want to buy a usb tuner then there are lag issues. I noticed that the usb ones are cheaper than pc cards and they provide much more features such as am/fm as well as video and sound inputs/outputs. What would you guys recommend that I get?