Well, in my humble opinion I would not recommend the Little Giant. There's difficulty maintaining the humidity. What ever brand you choose, do not rely on the thermometer included in the kit. Your best bet is to purchase a reliable digital Thermo-Hygrometer.
I got a brinsea octagon 20 ex last week. it is completely digital. I have not had to adjust anything in the last 5 days. It is expensive since it only holds 24 eggs, but to me it's worth it not to have to keep checking the temp and humidity!
I've had the hova bator for years, with varying degrees of success. I'm currently building my own. Can't afford a really good one, but despite my lack of carpentry skills, I think I can swing making a cabinet style with insulation. The biggest problems with the styrofoam ones in maintaining temperature and humidity. Hatching eggs are too expensive to take chances.