Please send me your recommendations for a bike with a comfortable seat and the cost. Something I can take to the trails with my DH and ride for exercise.

I may not be much help here but....

I would say that most mountain bikes and the combo mount/road bike generally have narrow seats. What you can do is buy the bike you want and buy a new wider seat with a gel cover for comfort.

Otherwise you will have to do like i did for spin class and develop spots on your but that eventually stop hurting lol