Mine's an ARE,Inc., if I'm right on the name. It's a good product and supposed to be highly thought of in the industry.
Several tips to consider from what I learned from picking a lousy dealer:
Style: Usually numerous choices here as to design, height, materials, etc. Some options only available with specific models; with mine, I wanted the back door and the rear piece that was hinged at the top so it swing up and not have to lift things over the tailgate so as to save this old back. I had one model that was made to take the door and back piece I wanted.
Windows: again options with different styles, sizes, locations, opening and locking mechanisms, shading, glass, plastic, some can take screens, some not.
Hangers for clothes, fishing poles, etc. will present different locations and directions of mounting.
Wiring: Check on what you want in the way of interior lights, type, location, wattage, as well as 12 volts from battery via cigarette lighter jacks, phono jacks, or buss bar. Do you want lights switched at light or via separate switch for all, or 3 way switch so you can turn them off from cab as well as in back.
Also, if you might put a 12 volt heater in the back, you'll need a heavy lead from the battery.
Any thoughts of a portable winch off the hitch--then consider 4 ga. wire from battery.
Check out with Toyota if any problem with computer and increased draw if dealer wants to power lights off existing circuits such as light on back of cab.
Mounting: Make sure mounting is secure and weatherstripping on top of bed rails is of sufficient size and strength. See if can double nut bolts and/or loctite bolts so will not vibrate loose. Make sure fit of top to bed is close to spec and not generic and that dealer guarantees dust/waterproof. Same for tailgate/door.
Paint: Make sure paint is done at factory and have dealer send in door off gas tank fill to match paint to the factory paint. It's hard to get a perfect match but it should at least be quite close.
If you want any tie downs on rails, find out what will work with your specific set up.
Bed liner: Personal choice as to a plastic insert, sprayed rubber coating, carpet, etc. A pad under the insert will help to prevent cracking due to weight. Make sure area underneath liner is waterproof so floor of bed doesn't rust out.
Side steps or running boards: Personal choice again. I got the biggest heaviest steel tubing and had them add several extra brackets to give it extra strength to protect in collisions.
Grill guard: Same here, lot of deer in this area.
Alarm: Talk to the kids and they can tell you who makes the best alarms and who knows how to install them. Installation is a huge factor in this area.
Bout it----Enjoy.