Pots! What brands are good?

[Champ81]

I thought most of the alpha pots were carbon track element. 
I got some alphas from mouser for bias adjustment and realized they are of metal element.  Always used to carbon  pots. Are there any differences?  I'm not going to go into audible differences with bias pots. Is metal better in terms of reliability or other factors?
Really want to know your thoughts.. or if this even matters for my circuit.