In all seriousness, with the amount of variables, it all depends. Any up/down will prolly take longer to check out at because you have to go back to okc for rtf. The best staffed tower only, is probably the quickest check out if you have loftier goals in mind. Omaha I think is even cat 2 in the last list, but those things change rapidly.
Then there is your ability. Plenty of people have gone chasing the money early when that 5 up/down was probably the best choice if they were honest with themselves.
Lastly, is where you are from, and where you want to be for a period if you have to wait your turn to move on. Also there is always cost of living, and location that affords you and possibly your family the best quality of life.
However, if this was the first list I was handed back when I was hired, and didn’t know anything about transferring, NCEPT, pay, work, etc.... I would have taken the facility closest to the location I grew up to be closer to family and familiarity, and worried about the rest later.
If you choose Amarillo you better plan on being here a long time. A majority of controllers are looking to get out as soon as our staffing will allow. Relationship with management is good. You can plan on training for around 2 years. Our traffic is sporadic due to the military and you will not get training everyday due to competition from other trainees. Once you check out on ground you will be used for staffing all the time.
A friend of mine is there. He used to lurk here, but PM me and I can put you in touch. He was tower only in the AF and said he didn't have much trouble in either facility. It gets busy during Oregon games. Nice place to live if you like the outdoors.