I've used those exact Kustoms for many bar gigs over the last 6 years with the same Yamaha mixer, they've been great. You can always get better, but these are completely useful for the money. I think I paid $140 shipped to Musicians Friend for the pair brand new on a sale when I first bought them in '07.
Peavey Unity Koa, Ibanez RD500, Squier VM 70's Jazz, Fretless P-Mutt, Fretted P-Mutt, Squier Jazz Deluxe Active V
SWR Fan Club #140: Henry the 8x8, Super Redhead
GK MB500, Neo 112-II