Tetris DX is fine, I hadn't thought about the GB color version, seeing as how it apparently has differences, then yes, it just comes down to whether or not you want to play original or the more forgiving one. So I say it's possibly a tie between them? I always preferred the original despite always being able to play DX longer before I would top out.
I had recently read an article somewhere where they had mentioned that the original GB version was considered by most hard core Tetris players to have been the best. So I was just agreeing by personal taste when I said it was "arguably" the best version.
Just as I had more fun with Super Mario Land than I did with SML 2. I was never compelled to finish SML 2 as it's gameplay was just different, while SML was more like the original NES Mario. SML2 felt more like an NES Mario 3 update.
While the addition of color to the Gameboy was nice, I personally think what they were able to do with the grayscale of the original just gave the games a more interesting feel. I personally would have been just as happy if they would have managed a higher rez full grayscale version Gameboy to allow more complexity and depth. The color seemed too restrictive and felt cheap to me making games actually less appealing graphically. I know that sounds nuts. But it is after all just MY opinion.
Which is why I think I tend NOT to think of the GB color games when thinking in terms of the Gameboy overall. I would have loved a regular original sized Gameboy, designed like the Gameboy Pocket in feel with the better screen. A 240x160 to 320x240 resoulution display capable of 256 levels of gray or more. I would have been in Gameboy heaven. But alas, they thought color was more important and soon the Advance made that sensible. I still feel the color version was a bad stop gap measure. as I don't recall any game released for it that was just profoundly better than an original GB game.
But then again, I wish people still made vector graphics games more often in the style of old (Imagine a full color high rez vector Star wars game with more levels and missions combining Major Havoc style gameplay for non fighter elements.) Dreamcast's REZ was nice though the "effects" when shooting things made it feel not as much a true vector game.
I guess, at heart, deep down, I am stuck in the past. I have never even desired an Xbox 360, but would love an Atari 2600 Updated to support Halo 2600 style gaming but with the kind of Processing and graphical abilities to let that game had been as complex as the Author was probably imagining it before he had to make it down to what they system was capable of.
And WHY OF WHY are there no Paddle controllers anymore!!!?!?!??! Dpads, analog sticks etc. are nice, but try Kaboom! or Breakout...not so nice. It was fun to play games with paddles and no one has used them since the Atari!?
I still want to find a way to add paddle control for play on the Pandora. Obviously not portable but it seems the only thing other than a light gun missing from the retro games control. Even if they had found a way to include a Paddle control on the unit, it would have been too small for accurate control I'd imagine. Maybe a joystick to USB adapter will be found to work someday, then I will be happy.