Okay, so I've been on newgrounds a long time, and it was only until I played this game that I decided to write a review.
This game is not the holy grail of all flash games, but it is incredible. I loved every second of playing this game, and the tutorial is refreshingly playful. Very pleasing graphics and gameplay that if a perfect combination of progressive, cute, and challenge.
That being said. I agree that some of the towers were overshadowed by the attacker and shield towers. I went for all at first but tossed everything but those two and mana for efficiency.
With that minor "drawback" out of the way. I will excitedly await a sequel.