Allsop Redmond Adjustable Laptop Stand - Vented Curved Sturdy Metal Ergonomic Riser for Home & Office Workspace (Supports MacBook, iPad & All Laptops)

I like this stand overall- it is simple, but very sturdy and a reasonable price compared to some of the $40 and $50 models. I was hesitant about the curved design making it feel flimsy, but each leg is one solid piece that runs through the length of the stand, and locks in with a big screw (the screws have a knob at one end, so no tools required). The rubber feet take some effort to rearrange, and they seem to move in defined increments.The platform is flat and metallic, with ventilation holes in the middle. The metal itself will act as a "heat sink" of sorts, but as long as your laptop has enough airflow when sitting on a flat surface, you should be fine. If your laptop has lost it's rubber feet, you should probably get some replacements to improve airflow. Sometimes a laptop is sluggish because it is getting smothered and overheated!One thing you should consider is that the "lip" at the front of the platform is maybe a hair over 3/4 of an inch in height. If you have the stand set at an angle, the laptop will be resting against this lip- so if your laptop has a curvy, "clamshell" design, get the ruler out and make sure that the lip at the front of your laptop isn't higher than 3/4 of an inch when sitting on a flat surface. In my case, it was the perfect height for a 15" Thinkpad.