Excellent advice! And when you're still confused, scout around and see if you can find a scientific study that helps you to sort through the conflict.
Sunbeam XPress has multi level heat settings, and is machine washable, and if you do an Amazon search, you can find price ranges as well as zoom in to see the control switches which have a "stay on" and a "2 hour" setting. For your flock size, I recommend the XL (12 x 24"). I've done heat lamps, and after trying the MHP method, will never go back to a heat lamp unless I'm brooding more than 50 chicks at a time. My chicks are brooded in an outdoor grow out coop. I start the heat setting fairly high, and decrease it as they grow. They let me know when I'm keeping the MHP too warm. If it's just right, they go under it to stay warm. If it's too warm under there, they hang out on top of it, or beside it, or bed down in an opposite corner of the brooder. By the time they are 4 weeks old, they rarely use it, and have completely weaned themselves off it by the age of 4 - 5 weeks, even with outside night temps dipping down to 20's to 30's.
FYI, chick dander is a horrid mess to have in the house. Imagine a fine oily silt which covers every surface, including vertical ones! For your brooder, if you do brood in the house, there is nothing easier than a cardboard appliance box. By the time your chicks are 2 - 3 weeks old, it's recommended that the brooder provide 2 - 3 s.f. per chick.
Other topics to look at: deep litter management in coop and run, fermented feed.
We are glad you joined our flock.
