I'm sure you can find a 600i somewhere, try Ebay. Yamaha stuff is great. As an alternative look at Carvin. I have the XP800 mixer and 10" speakers in my practice room . Super light and powerful system . Took it to one outdoor jab and it surprized me as to how much sond it put out. BTW just heard Carvin is closing so they may have good deals going.
Bill in SC --- Roland BK9 (2) Roland PK5 Pedals, Roland FP90, Roland CM30s, JBL Eon Ones (2) , EV mics, Apple iPad (2) Behringer DJ mixer