Pots! What brands are good?

[Champ81]

I ordered several of them. 
All of them say "metal" as the element.
Unless they mean cermet which consists of ceramic and metal particles 


RV16AF-10-15R1-B50K-3CLA
Linear B50K


RV170F-10-15R1-B50K-0021
Linear 50K


RV120F-10-15F-B50K-0075
Linear D-Shaft 50K


RV16AF-10-15R1-B50K-3DLA
Linear B50K Solder L


RV16AF-10-20R1-B50K-LA
Linear 50K Solder Lu


RV170F-10-20K-B50K-3021
Linear Knurled 50K


The last two pots have an interesting look to them. The back of the body is black plastic and the pot casing is the same diameter as the ones you provided bit the width is a bit smaller. The solder lugs are spread out instead of parallel to each other. However the lug holes and lug are small and it would be difficult to solder 4 pieces to it (in this case 2X20awg wires, a resistor lead and capacitor lead). The lugs for these two are very thin compared to the others. These are rated 1/10W.

Also interesting and one ive never seen before.
RV16AF-10-15R1-B50K-3CLA has a centre detent. So when I turn the pot it "snags" or "catches" in the middle. Notifying you when you are mid way. This might be a useful thing to have to know when the pots are at mid point when biasing.