I actually enjoy Qatar- maybe Im a glass half full type of guy! I rarely fly with people who are not happy here in Qatar, as one would get the impression just reading PPrune; however I do think the lifestyle is little more fun at EK as mentioned, so depends what is important to you.
One thing to consider-Qr has adopted mostly EASA flight time limits-Most USA/Australia destinations are now 3 pilots vs 4, losing day off on all long haul flights like Houston, Lax. I will be the first to admit this is going to have a large affect on the lifestyle and roster we previously had.
( I believe Emirates tried this a couple years back?? as far as I know they backed off and returned to 4 pilot crew for most long haul?)