I've had my beardie since Christmas and he's been doing just fine, the only problem is his main basking bulb. I started out with a 100w zoo med basking light, that burnt out one morning after about two months. I took it back to the pet store and they replaced it with a 100w exo terra basking bulb. This morning, that too burnt out. Now I've heard they should last about 6 months... So if anyone has any ideas on how this happened that'd be great! Also, what's the best brand 100w bulb to buy?