Resistance Bands

Hello anyone that decides to read this. I am interested to get some personal accounts of people that use resistance bands. Normally I use the free weights at my gym, but with my job I go through somewhat extended bouts of travel that require I be in fairly remote locations (i.e., not at hotels with fitness centers). Does anyone have recommendations on resistance bands that they have used, how long they last, and where you got them? Any advice is appreciated.