Well... A heavy route. IAH to YYC and sometimes ORD to YYC. First leg is from TPA and usually not a problem. This route is heavy Oil and they spend the $$. But I do too or I would not have GS. My point is that it is not the way it used to be. GS had more value in the past and appears to not these days... Who knows, maybe I am just having a bad day/week with this stuff as the two flights I had to rely on CPU in the past week, I got snubbed and sat way down the upgrade list.