SteelSeries always does a great job with their mouse mats, and the QcK Edge is no exception even though it wasn't very hard to create as it's pretty much just a standard, well-renowned QcK model with locked edges. If you had previous issues with fraying mouse pads, or just want to eliminate any possibility of fraying, the QcK Edge might be your ideal choice. It's a truly remarkable product with absolutely no tracking flaws or real build quality issues that would affect performance and offers a smooth and consistent glide without any bumps or uneven spots.

The thing I don't really understand, though, is the height of the XL variant; it's only 300 mm high, while most other SteelSeries extended-size mats are 400 mm tall. It's a strange thing, but some people will definitely find the smaller vertical dimension more appealing.

As for the SteelSeries QcK Heavy, it was an existing model as well, but got updated to a direct line of three differently sized products to keep things simple. You can really feel the extra padding on it, and it honestly feels amazing—at least to me. This is quite subjective, of course, and some people may dislike it because using a very heavy mouse or applying a lot of pressure will make the mouse sink into the pad, which you can feel.

In terms of build quality, the QcK Heavy has nothing to be ashamed of; it's just perfect and has no noticeable errors. The surface is fantastic on it as well, and there are of course no tracking issues, bumpy spots, or inconsistencies. The backside material is among the best of its kind when compared to those I have thus far come across; it sticks to the table really well once the pad lays out flat, although it can take a few days before the QcK Heavy flattens out completely because it is much thicker than other pads.

One thing I would change on both the Edge and Heavy mouse pads is the raised logo, as it slows down the mouse if it accidentally glides on to it, which can be quite annoying—ideally, SteelSeries would have it simply printed on to eliminate this "issue".

They are averagely priced compared to the competition of the same tier. While certainly not expensive, they are definitely not the cheapest options either. However, I can still happily and wholeheartedly recommend both the Edge and Heavy QcK to anyone who finds them suitable for their personal preferences.