I bought Dragon Quest 1, 2, and 3 on the Switch and I just beat the first two. Dragon Quest 1 was pretty easy. Playing only as the hero was surprising at first and a little disappointing, but lorewise helps establish him as being fairly badass. Dragon Quest 2 was more of what I expected from the franchise, but gave me a bit of trouble though, especially the final area random insta-kill attacks are annoying as hell. A small issue I had, which I can forgive since they're old games is that the locations aren't labeled on the map which made travelling a little annoying since I didn't remember the names that well.
Just started Dragon Quest 3 and the upgrade so far between 2 and 3 is amazing. Being able to set your party's classes, stats and gender to your preferences is pretty nuts. Even got control over the battle AI and marching order. Then there's the personalities each character has which I know effects the leveling, so now of thinking of characters getting sub-optimal personalities. I'm actually a little overwhelmed by the options because I just want to try out all the classes, but don't want to keep cycling out my party.
I like 1 and 2, but Dragon Quest 3 is one I'm gonna have to replay a few times by the looks of it