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SpecsUpdate
Pros
Pro High quality mechanical key switches
The CM Storm QuickFire Rapid uses genuine Cherry MX keyswitches which are the most common and generally considered the best switches available for keyboards. This means a few things:
First, the durability and quality testing are top notch. LinusTechTips took a tour there, and was extremely impressed. They go through vigorous testing, and are the highest quality keyswitches available.
Second, because they're standard Cherry MX switches, they are interchangeable with custom keycaps. Down the road, if you prefer you can get your own custom keycaps which totally change the look of your board. From a minimalist design like this to a custom image like this, or even different shaped keys like this you can modify them to your hearts content.
Pro Choice of switch available
Cherry MX switches come in a variety of options which are differentiated by their colour. This keyboard is available with 4 different switches - blue, brown, green, and red. Each has it's strengths and unique feel.
Blues are commonly thought of as the best switch for typing as they have a tactile bump and click when they activate. Reds are better suited for quick activations and double tapping and are also quieter as they don't offer a tactile bump or a click. Brown switches offer the same tactile bump as the blue switches, but don't click. Green switches are a heavier blue switch which means it has a click and bump, but takes more pressure to activate the key giving it a different feel.
Different people prefer different switches, and it's great that you have a decent selection when looking at the QuickFire Rapid.
Pro Great cable solution
Not only is the cable detachable, but it has cable routing as well. If you want, you can swap out the included braided cable for a longer/shorter/different coloured one that suits your setup better. Also, if you brake the cable (or your pet does), it's cheap to get a new one and very easy to do.
Cable routing helps organize your cables in a more pleasing way. Instead of having the cord come right out the middle of the back, you can have it go on either side of the back which can help make your setup look cleaner.