HTC has advantage over Samsung by providing a water resistance design. This case option is very essential and could be considered by many buyers.
HTC improved rare camera to 20mega pixel with 4 mega pixel to the front. Increased capacity of battery.
Samsung Galaxy S6 has done away with removable and micro SD expansion, S6 starts rom 32-128 GB which is big enough or more users. S6 is composed of glass front cameras, rear panels with gorilla glass and metal edges. The cameras were given better low-light performance. It is fixed with faster DR4 RAM with 3GB capacity.