Lending practices - Credit union vs. large bank

[Hanyai Bungals]

Hello, A bit of background - I am attempting to secure financing for my first multi-family home to the tune of $150k in the Southwest Houston area. Based on previous advice that I've received on BP, I approached about 15 credit unions in my vicinity to see if they would be interested in lending. However, I've been getting the run around, with no clear indication as to loan terms. Has anyone else experienced difficulty acquiring lending through credit unions vs. larger banks? Does anyone know of any reliable credit unions in the Houston area? Also, given the situation described above, would anyone suggest I try my luck with the larger banks? Besides having more conservative loan terms, are there any benefits of pursuing financing through a larger bank vs. a credit union?