Resistor Questions

[skypn]

As far as audio goes, what is the difference between carbon film and metal film. I have noticed that some carbon films are smaller than metal at the same wattage, and that the size of carbons differ. I am trying to squeeze as many components in as small a space as I can so size is a factor. Also, what are the good companies?  I mean like who is cheap, who is middle of the road, and who is the premo?
TIA

[madbean]

There's no reason not to use metal film for everything. Better tolerance and lower noise. 1/4W is standard but for tight spacings 1/8W can be the better choice. However, higher wattage equals less noise as well so there's always a small trade off. At 9v I think the difference between the two is very minor.

I buy Xicon packs from Mouser. 200 for $4. That quantity lasts a long time. I go through 1k, 10k and 100k the fastest.

[skypn]

Thx madbean. I usually buy from mouser, but sometimes wondered at the different sizes for same resistance and wattage 

[davent]

Size and wattage don't necessarily jibe, you can get 1/2w through hole that are a crack longer then an 1/8th of an inch, 1w at 1/4". I'd guess if it physically fits the space on a pedal pcb, resister wattage isn't going to be a factor.
dave