We did a story on the new series and I have to say, for what it is this is a fantastic "reboot". It's not pretending it's something it isn't, like the original cartoon it's aimed directly at kids age 5-12.
When we did the story (a few weeks ago now) I got a bunch of the toys as swag. Included in that bag were all the "talking" turtle action figures (when you swing an arm/leg they say things that you would expect them to say in a fight).
My kids STILL haven't put them down and are total Turtle nuts now. The show stays true to it's television roots (I never read the comics), it's light hearted, colourful, and VIBRANT. That last one I can't stress enough. Shows like Clone Wars are so incredibly wooden as to be unenjoyable. TMNT has life to it.
For those who like their Turtles dark & gritty you're out of luck, but you're not who this show is for nor should this show be for you. Sit your kids in front of it and watch them love it like you loved the original.