Twisted, I think this WarioWare title had the best soundtrack and minigames available. The motion moving also gave it that unique playstyle towards certain minigames and I just love the collectibles you get in the game like the sound selection and those bizarre toy/capsule things that are reminiscent of Wario's wacky Land series.
I feel twisted had the best soundtrack and the best humour.
Touched added all of my favourite characters that aren't Jimmy T.
Then there's DIY which has the best minigames and the ability to make video games. Its so good that even the tutorial of all things is fun and that's how you know your on to something good. I also have fond memories seeing what ot microgames people made. RIP Nintendo WiFi Connection, You are gone but not forgotten.
I say Wario Ware D.I.Y. is the best game. It is the game i play the most since it is pretty much endless.
I also like to pretend to work as Wario's newest employee and directly interact with my favorite characters.
I REALLY should play it again.
By the way: Just because Game and Wario isn't a traditional Wario Ware doesn't mean it is bad. Heck, it is probably my second most favourite Wario Ware game.