>>The usually suggested cheap sub is the Dayton sub from parts express, which usually runs about $100. Better subs a bit up in price are the Hsu STF-2 and SVS PB10.

Speaking of cheap subs, has anyone tried the Fluance subs ? They seem pretty cheap ($199 US for the 10" / 150W and $299 US for the 12" / 200W) but no idea if they are any good...

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8