The Coolsat 4000, 5000, & 6000, as well as Pansat, Fortec Star, and Visionsat IV-200, have all been hacked, but -also- operate quite well for the intended purpose of FTA.
So, I left them off the above list.
As far as I could tell, the Viewsat models commanded the highest prices, and were held in highest regard in the hack community.
They got new firmware before most all other receivers, when needed.
Couple of years ago, the premier model didn't even run a motor worth a darn. That did eventually get fixed, I read.
They had multiple confusing model names; some may not have had blind scan (?).
If offered one, I'd probably take it and play with it.
As for Coolsat 6100, 7000-series, and later models, they were made at a different factory, have different firmware, and a very different user interface from their earlier cousins.
All had generous hack support, but I wouldn't necessarily hold that against them.
You'd have to check with users to get more info on motor, switch, and blindscan support.
The 8000-series hi-def models have a following, and the others may be good bargains, as well.