I have downloaded probably close to 20 off of GuitarBT.com, however many of them get on my nerves. Most of them have tacky bass and organ sounds that seem extremely out of place, the Blues in A that you hear everywhere is too fast. Many of them end too quickly.

Could anyone direct me to some good old 12-bar, nice and slow drum + bass blues backing tracks that don't sound like a crappy MIDI? Key doesn't really matter to me. I could use all keys.

Thanks all.
"The future's uncertain, and The End is always near."
-Jim Morrison