[Brophmeister]

Yep, I've been using Tamiya acrylics a long time and never had an issue. I actually rather like them, I find I can achieve a nice even finish irregardless of how thick or streaky I layer the paint on. Mabey you got the crappy paint left at the bottom of the vat?

For metallic paints my local hobby store retails an Italian paint called "Plata Liquido" manufactured by Vallejo. Its certainly not a cheap paint but holy crap it looks superb.
http://www.acrylicosvallejo.com/

Please do post pictures when youre done! I saw a Tamiya Musashi at my hobby store the other day which I might consider getting once this is done.