Hi Karl,
I've had people say they've had nearly 100% deliverability rate with the email leads, and I myself have used the postal lists many times and they also have a high deliverability rate. Your response rate depends on your offer, of course! You get free bonuses with all orders of email lists. You can choose from non-opt-in, or opt-in with or without names and postal addresses. The email lists are updated daily.
The postal lists are fresh within 30 days and have a 50-cent money-back guarantee for each non-deliverable.
http://www.wilsonlists.com/141A