My opinion...commuting to reserve is awful. Commuting to a line is better. Still not fun but better. I bid something that allowed me to hold a line quickly.
M88 and 320 are the best bets for that now, with the 717 close behind. 737 and 7ER, it will take substantially longer. 88, 717, and 320 all have nice room up front though 320 is hands down the best.
Many opinions, do what's best for you and what you want, and you'll be happy! I was in king airs for a long time too. I'm a taller guy and I think you'll be happy with the room
In whatever you choose. Welcome.