It's a great game, and I recommend it.
Now Super Mario Land 2: 6 Golden Coins is another story. Compared to SML, it has oversized graphics, cruddy controls, and little of the original charm. Apparently it has Wario in it, but I won't ever play far enough to know. It's been filed away in my big game library, and I don't intend to get it out again, except when needed as reference material.
One last thing: I've been told that Miyamoto had nothing to do with Super Mario Land, and it occurs to me that that's a good thing. Of all the Mario games I've played, from Super Mario Bros. up to Super Mario 64, the one not made by Miyamoto is my favorite. Go figure.
Addendum: I was going to say "...from Mario Bros. up to Super Mario 64..." but I wasn't sure if Miyamoto was in on that original trip into the sewers. Anyone know?
Miyamoto was, I'm fairly sure, the designer of the original Mario Bros., as well as all the other early appearances of Mario (DK and DK Jr). Don't know about DK3.
Miyamoto, I believe, wasn't involved with any of the GB Mario games before the Age Of Ports (which began with Super Mario Bros. DX on GBC).
That game is incredible, definitely has my favorite music in a mario game. I wasn't aware miyamoto wasn't involved. Apparently my 2 favorite mario games are the odd ones of the bunch, as it's this and "mario 2"
Funny, I'm exactly the opposite. I loved Mario Land 2 because it felt more like the original. And the undersized graphics of SML made it almost unplayable. (Until I beat it with a Game Genie, that is)
I still think you should play through SML2, even in easy mode or with cheats, for completeness sake. Heck, even just cheat yourself to the Wario level so you can see the ending. You need to know why Wario hates Mario...