With all this talk on the Visitherm Stealth, what about hte Visi-therm Deluxe? I've used a 100W Deluxe for almost 2 years on my 20g and it's always kept the temperature where I wanted it. I recently emptied the 20g and got a 46g bowfront, instead of buying a new 250W heater, I wanted to get another 150W Deluxe, but seems like they don't sell those in stores anymore, only online? I just ended up getting a 150W Stealth and added it to my 100W Deluxe in the 46g tank. Pricematch with Petsmart.com saved me $15