For RPG Maker itself, I tend to prefer the front-view battle unless the alternative battle system is done WELL and done in a way that makes it interesting. I don't generally prefer the appearance of the default battle system however, since its kinda clunky and ugly looking.
When it comes to games and rpg's in general, I generally like all systems so long as they fit well. Probably my favorite battle system in an RPG is the one in Grandia 3 because it is incredibly strategic while still remaining easy to learn and master as well as having just the right amount of complexity.
However, I generally like battle systems that make some kind of sense to the game itself and helps to define the overall aesthetic of the game, even if its kinda gimmicky. For example, in the original Mario you jumped on your enemies because jumping across platforms was just SOMETHING MARIO DOES. It made sense. In God of War to contrast, fighting hundreds of enemies at once feels right because KRATOS IS A BADASS and it helps the player feel like that. In that case, it makes sense. Both "battle systems" help the player feel and do what the developers want of them, which really should be the goal of it all.