If you'd like an expanded version, the Essential Boz Scaggs 2-CD set on Columbia is a good one to own. Other than that, there is a 3-CD box set (My Time) that covers most of the same ground, plus some later tracks. The US Hits!, though, is so perfectly sequenced that it's a good 10-song presentation.
My Japan version of Hit! has a different track lineup:
This is the US version:
This is both discs of Essential:
My Japan version of Hit! has a different track lineup:
This is the US version:
This is both discs of Essential: