I have a 3lb Timney, Giessele SSA-E, and just bought a Geissele Hi-Speed National Match.
I honestly like them all and they are all far better than the stock trigger. I thought the SSA-E was really nice until I bought the Match trigger. The SSA-E and Timney both have a tiny bit of creep (I mean very little, but I can notice it), the Match trigger has zero.
I'm a fan of light trigger pulls, I really don't like anything over 4lbs. The reason I grabbed the Match trigger was to replace the Timney (for my Grendel build that I'm waiting on a barrel for) and I wanted as low as possible pull on it.
Something tells me I might be upgrading my SSA-E to a DMR in the future, but for now that is what sits in my AR.