Magnetic dust filter for HAF XM

Hello, I am planning to build a gaming rig in the Cooler Master HAF XM. I really like the case, but the one thing that kinda bothers me is that there is not a very good dust filter, so I was wondering, should I buy a cheap magnetic dust filter, such as this one http://www.amazon.com/Silverstone-Tek-Filter-Cooling-FF123B/dp/B00ARB5E8U/ref=sr_1_1?ie=UTF8&qid=1373209614&sr=8-1&keywords=magnetic+dust+filter and stick it on the bottom? Or should I be fine with the cheapo stock mesh dust filter? (I'll most likely be putting the chasis on carpet by the way)

You'll probably be fine as long as you clean them regularly, but better dust filters can never hurt. Thats a huge f'ing case btw.