Hey, found some more good quality sutlers.
(UK) (WWI and WWII German)
http://www.richardaunderwood.com/index.php HIGH QUALITY REPROS, but come with the price tag for it. Simply amazing stuff.
(USA) (WWII German)
http://www.lostbattalions.com/ Also really great repros, but a non-standard ordering system if you can deal with it. Really high attention to detail in the reproductions. Call it being a stitch nazi.
(USA) (WWI and WWII: Multiple Countries)
http://reprorations.com/index.htm Basically all in the name. Reproduction rations at a decent price which make great pocket litter and something to put in your living history display... or eat on the battlefield! Much better than Mickey D's in the truck back at the lot, that's for sure!
Also in the US, there's Soldat FHQ. They do all kinds of stuff, but most notable are their WWII German Erkennungsmarke (ID disk) and Soldbuch (paybook) personilization. A bit pricey, but looks amazing.
http://www.soldat.com/soldbucher.htm