I've used Netgear in the past so my last one I chose them as well. To my disappointment, the wireless portion was always a big flaky and recently basically started to fail. Major drop, super slow speed (to the point my devices would actually say "disconnected due to slow speed"), so it was an issue when trying to work from home. I read tons and tons of reviews and literally just about an hour ago, picked up an ASUS Dark Knight for $125. I'll have to see how it does, but setup was a breeze, its wireless is extremely fast and CNET rated it pretty much one of the top 3. There's a higher model out right now that is even faster, but CNET also said this one was pretty much just as good for about $50 less. Pleased so far
Amazon.com: ASUS RT-N66U Dual-Band Wireless-N900 Gigabit Router: Computers & Accessories
I have comcast too and I don't even use their modem - I bought my own Motorola and have been very happy with it.