Not sure if that's a proper way to start, but I believe this game is well worth recommendation. I've gotten pretty much all out of it when it was first released, and was delighted to see it on Steam as well.
I have played all games of the Treasures series, and the fourth one was probably the best. Those who have played the other games will find many familiar features, plus some very interesting new ones, like multiple game tasks. All in all, this is a very well made high-end match-three game -- it even has a storyline (a rather mind-blowing one for match-3 game, by the way) with voice narration this time. Special thanks goes out to whoever did the music and cut scenes, but really, everything about how the game looks and sounds seems great.
One warning for people like me, who generally would prefer a slower pace - although there is a relaxed mode, where you never lose a level because of slow play, your experience points and the money for buying power-ups is dependent on making a prescribed time per level. Times are gold, silver, or bronze, and there are corresponding point and coin ranges. If you miss out on bronze time, you get no points and no coins.
It is possible to play the game with few power-ups, but it isn't really any fun, so the game definitely pushes you to play fast, which can be frustrating if you're not able to improve in that area. The times are somewhat generous, and in some modes skill will definitely help you to a good time, but still, if you cannot (or choose not to) play relatively fast, you should approach this game with some caution.
Anyway, after some time with the game, I've got the hang of it, and now even start to feel satisfied with all that fast-paced action.
And, finally, it seems that Steam version loads and generally works a bit faster and more smoothly than the early one, which is one more reason to add it to your library here.