Our Montana came with the Apollo Half Time oven. The "Half Time" feature is great, as long as it works as it should. You can, for instance, cook a pot pie in 25 minutes, or so.
The down side to this brand is limited, to non-existent customer service. I actually replaced a broken one from, WalMart online, the only place I could, at the time, find one. The cooling fan that Montana added to remove the excess heat had to be remounted to the replacement unit. So far, this one has held up pretty well for he last three years.
As I said, functionally. this unit is hard to beat but serviceability may be questionable. So far so good for this second unit.