What do people think of their fleet composite of all SAAB 340...

What do people think of their fleet composite of all SAAB 340 (mostly the 340 B)? Looks like it's a type that's stopped production back in 1998. Their 25 leased fleet SAAB340b were customised and commissioned in 2010. Are there not still-in-production small planes for regional routes that REX operates on? Anyone think it's a little worry that all their current fleet are a bit of an "extinct species" plane type?

I like REX because its current low trading multiple, monopoly status on most their routes, and maintainable dividend. However, air-line is no doubt a challenged sector to invest in.