I'll join the chorus of Thank You's to Erik. He impresses me as one of the most genuine, up-front gaming folks around... and always keen on improving Dragon/Dungeon in line with reader feedback.
I've been a Dungeon subscriber for several years now, and the magazine has improved hugely in that time. The loss of Polyhedron was a shame, but I primarily buy Dungeon for the adventures. Dollar-for-dollar, my Dungeon sub is the best money I can possibly spend on gaming gear.
I don't have a Dragon sub, but I buy an issue every now and then. Again, my observation is that the mag continues to improve. The intermittent Demonicon of Iggwilv articles (Pazuzu, etc) make those issues "must buys", and the upcoming support for the new Dungeon adventure path is also very attractive.