I siad "If you don't hear the latency, do you have a line out of the amp..."
So it wasn't meant as a suggestion to avoid latency.

Audio Interface; such as one connecting via USB would avoid the soundcard in the machine altogether.

http://www.sweetwater.com/c695--USB_Audio_Interfaces

Find one in the budget, then ask a few questions to see if anyone here has used it or had problems with it.

I do not work here, but the benefits are still awesome
Make your sound your own!