At its heart, it's just Puzzle Bobble/Bust-a-Move, so I suppose how much you like it is based on how much you like that style of gameplay. There are a few cute extras, like being able to buy different bubble designs in a store with coins unlocked from various actions in the game.
Where it really shines, though, is if you have Taito's Paddle Controller (sadly Japan-exclusive; makes Space Invaders Extreme even more awesome and Arkanoid DS a little less boring; you can find them on eBay or Play-Asia sometimes), which gives the game much more of a mini-arcade feel.