The choice for me was obvious (having interviewed at both schools). How did you feel at each school? Did you like the atmosphere, facilities, presentation, interview at one more than the other? I was not impressed at all with TUCOM NV. The only thing it might have over KCUMB is extremely diverse rotation experiences (EVERYTHING under the sun happens in Vegas, and i'm sure you will see it all). Other than that KCUMB has the facilities, campus-like feel, systems curriculum (huge for me), and community and national reputation (it's been around forever).
Summary: You will receive a comparable education where ever you go, but you want to make sure you are a good fit for the school and the school is a good fit for you. If you had severe reservations at either school than take that into consideration.....and choose KCUMB
(wow, such a biased answer!)