I have both mountain bike style and road style. I notice very minimal differences in comfort. Being a looser fit, the mountain bike shorts may hang up a bit on the saddle when I stand to pedal, but nothing that is a show stopper. I pick them up when I see them on sale at places like Academy Sports and probably pay around $30 bucks or so. I'm a casual rider so I don't see the need to go full on Fred and pay a ton of money for them. Canari is the brand typically sold in stores like I mentioned. They have affordable jerseys as well.
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"It is the unknown around the corner that turns my wheels." -- Heinz Stücke