Best Quality Skip Tracing Service?

[Sam B.]

I posted this a while ago but I know this is a relatively new thing so there are a lot of new players popping up over the last couple years.

I need to skip trace roughly 100,000 property owners in one batch.

I'm familiar with BatchSkipTracing and YellowLetterHQ (the latter being half the cost listed online). Waiting on quotes for my volume.

Any other suggestions? Quality is important.