Looking for some good body filler

Im planning on smoothing over the welds on my axle tabs and then painting my axle with something like POR-15. Any recomendations for a good filler that will work well with the por-15?

I used All-Metal filler on my axle. Then I sprayed down some por-15 over it and then laid down some PPG paint over that as a topcoat since the por-15 is UV sensative without a topcoat. It came out pretty nice and smooth. The All-Metal filler actually has fine pieces of metal within it's texture and seals welds up really nicely.

any good places in the ma or ct area to pick some up?

which is better USC all metal or evercoat metal 2 metal?

i used metal2metal on my notches, axle tabs, etc then POR15 then POR15 Chassis black.

I use all metal and it kicks ass

any +/- to either of them?

i know evercoat z grip (green can) has metal in it. just make sure you wire brush the welds first.