UP2CSX,
Yeah, I gotta agree with you. Keeping in mind that to date that I've only been able to compare F-7's, head-to-head I am partial to Genesis. My Blueline UP F-7A & F-7B are of good quality, it seems that Genesis pull better, run more smoothly, and look better. However, Genesis does not offer a UP F-7, so I went with Blueline. If I decide to go DCC, I will get Tsunami decoders for the two Genesis F-7A locomotives I now own and one more for the ATSF passenger I will buy as soon as they're available. I do not think I'll put a Tsunami in the Genesis "B" units.
As far as steam goes, I do like my Blueline ATSF 3751, but I have a hunch that I'll be partial to the Genesis UP F-E-F 4-8-4 I just ordered. In the end I'll have F-7's for ATSF & UP and steam for both road names as well. God forbid, I decide to start another line!
Take care,
Tom