Who makes the best 15mm Figures?

I bought a mixed lot of 15mm Vietnam figures.. so I have no clue.. some of the packaging are from Battlefront and some are from Peter Pig.. but there appear to be some other styles in the set.
So what is the common consensus over who makes the nicest 15mm figures these days?

Ironically, Vietnam is the only historical period that I don't do in 15mm (I went 20mm), but if I were to buy them, I would probably go with Peter Pig, as I just tend to like the their figs, and filling in ranks maybe with Old Glory if needed.