If you want USB 3.1, the ASRock H170A-X1/3.1 is a good choice, while the Gigabyte GA-H170-D3H is also a solid pick. These both typically retail for just under $90.
If you want full budget however, in terms of H110M motherboards, the Gigabyte GA-H110M-A is the best choice atm imo for only $53.88.