A2 colour printer

I produce wedding and event stationery for people and have made a list of requirements for my new machine. I am looking to purchase it as soon as possible for immediate delivery.

Requirements in no particular order:

Capable of printing up to A2
Prints upto 350gsm
Prints C6 envelopes
Compatible with a Mac / Illustrator / photoshop CS3 & 4
Easily obtainable consumables
Good support so issues can be quickly resolved
Prints on as many finishes as possible
Highest quality finish & consistent colour reproduction
Economical
Extendable warranty / care plan / maintenance contract
New model (won't immediately go out of date like my last one!)

I would also like to discuss finance and lease options which are available to me.