Valve Stem Seals, Which Brand?

[Gratefuldiver]

I need to replace my seals and wanted to see if you guys felt one brand was better then another. I plan on positive stop Viton seals but that's about all I got so far. Thanks

[TheJDMan]

I have had very good luck with FelPro seals.

[sam 74]

i've used felpros for years, no complaints here.