Sigma 500 DG Super or Canon 550EX or both

[*Sonic*]

To cut a long story short

I have on my way a Sigma 500 DG Super, and I have been offered a Canon 550EX for a very good price (2nd hand) not the question is, should I purchase the 550EX so I can have a 2 flash setup

Or purchase the Canon, and sell the Sigma, or not buy the Canon and sell the Sigma and get a 580 EX II now Canon has the rebate on

As I am relatively new to flash photography, I am wondering whether I will be better keeping the Sigma, getting the Canon too and a good Light Meter and experimenting away :)

I like the idea of a home made light ring too, which may benefit from two flashes

I would also at some like some umbrellas / softboxes in the future

[Refemall]

To be honest, I have a Sigma 500 DG Super, and am not at all satisfied with it.

My suggestion would be to sell the Sigma, and get the 580, if you can.

[*Sonic*]

In what way arent you satisfied with it?

[rhys]

Can the Sigma fire 420s and 430s?

[dch0719]

I have the 530 Super and the 550EX. With mine I can control the 530 with the 550 as master but it don't seem to work well the other way around. I've heard that 2 sigmas work well together but not having 2 I can't tell you.

Dan

[canonloader]

Stay with Canon for flash. Buy that 550ex. :)