Wifi is now in almost all company-owned Motel 6 locations ($2.99 a night) and in quite a few franchise locations (often free). The company locations are a lot cleaner and nicer than they used to be, but the price is reflecting that - Accor is trying to go upscale with the Motel 6 brand now that they sold off Red Roof. It's still spartan when it comes to other amenities but for a place to crash for the night it suits the bill. Super 8 is getting pricey in a lot of locations and the quality is quite variable.
I'm on a trip right now - I stayed in the Super 8 in Van Buren AR ($64, very well maintained but heater fan was noisy), Motel 6 in Holbrook AZ ($40, also very well maintained, free wifi was unusable in the evening but fine early in the morning, shower stall, no tub), and Motel 6 in Yuma AZ ($53, very well maintained). I also stayed in the Big Texan motel in Amarillo TX ($57, not worth it, had to steal wifi from next door, not very well maintained, its draw is the old West decor, see attachment). Posting this from Yuma. Prices include AARP discount and tax.