I use to use ThunderNews & NewsDeamon & Astra in the past... Left because of completion problems with all 3...
Lately from my experience (if I'm not just lucky), take-downs haven't been as aggressive as they were. I used to get missing articles on AW, but I have to say I've been good for several months now. Nowadays you want to have backbone provider redundancy, and as always, try to stay vigilant about grabbing stuff quickly. For the excellent performance I got with NewsDemon today, I will keep it in addition to Astra and another block account I use.