Hmm,
LH would be perfered, just cause the food is better and the AVOD, over UA
UA is nice, mainly for the friendly FAs, though the seat and technology is behind. Food is good, but booze needs some work.

I don't like LOs no 150% EQM bonus on B fare, and also no 100% RDM for 1P/1K, and that would cause me not to really choose them as my first option. plus booking the ticket was a hassle, and I need to fly RT on Lot, cant book OW lot, return LH or UA, as it was then pricing ful Y, no codesharing with LH on B fare, and also their customer service is crap. I averaged 40min on hold when I was purchasing, fixing their mistakes, and then trying to change my return, which at this point I just gave up. Probably spent over 6hrs booking and ixing my ticket due to their stupidity. UA I usually never hold more than 1min, and the agents know exactly what I want. All those reasons is why I wouldn't choose LO as my main airline, or even secondary. Its usually UA or LH. Food was bland, dry meat, salad was really small where the grapefruit was more than the salad. Cheese was though good and port better than UA, and a lot better wines. Presentation of the food was bad, they didnt remove the wrappers from the salads and other cold food. Metal knives though, and real salt/pepper shakers.

Ill try though tonight post a full compete report/comparison on UA/LH/LO C class