Hi all I am currently looking to purchase a couple of flashes. I have 2x YN465 which I want to upgrade from. In an ideal world I would like to grab 2 or 3 SB900's but alas it all comes down to the all mighty $! I don't much about the other alternatives so I was hoping you guys could recommend some alternatives that won't break the bank. I was also wondering if anyone knows what the YN560's are like? I'm currently shooting with a D90, thanks in advance.