There are others - RM2k has WAY more features, built in battle system, exp system, automatic moving NPC's, ect... While Quest is text-based (I say this again because I think it's important), and the game-maker is allowed (hehe - sounds like it's a priveledge...) to create everything.

I myself have found RM2k to be a bit confusing in places - and Quest to be rather good in explaining.
But that's partly due to about half the functions in quest going in AFTER I first got it...

It really depends on what type of game you wish to make, what skill you have, how tollerant you are and/or what point in the game making process you are at.

I think of Quest as good for begginners because it doesn't need you to worry about graphics at all - just text. It's good for low-skill (those without alot of programming knowledge) because it has QDK. QDK can be annoying for those with NO programming ability - but then again you can't make a game without some ability. Quest is a good (and I am really going to use it in this way) way of planning a graphical game - seeing how it is going to work, getting the story right, character's ect...

RM2k has a good editor/creator in some respects - the map creator is simplistic, easy character creation, automatic battles. But I found it annoying you have a limit on the type of tiles you can use, the battle system is over complicated and to change only one aspect of it you have to program your own - in a very dubious language. It is good for a mid-way point in game creation, or end-point. You can see what the final product is going to look and feel like.

The choice is yours.