for example, look at the asus boards ranging in prices. note that they are moderately similar in what they have, but the middle 2 actually have wifi and the sabertooth doesn't. Then you have to question where that cost that should have went to wifi has gone, which in the end points you to the direction of aesthetics. The "armor" on the sabertooth adds no performance. if it gets dusty, it wouldnt matter as much as the only thing dust would affect performance heavy is anything connected to the motherboard, the gpus is unprotected and the cpu is covered by the heatsink that is on it.
You don't need to spend that much.
ASUS P8Z77-V PRO or ASRock z77 Extreme 6 can serve you well, essentially the Sabertooth, and both are relatively cheaper. Click here to see comparison. Then choose between the two on which features you'll more likely need.