I'm sorry to say this, because I admire the work Wonko and others have done, but the Wizards did a really good job with the character builder. I only find minor bugs when it comes to super weird stuff like armor that grants attacks. It's so good.
I fear that 3rd party developers are going to fall behind. WotC has proven already that they are updating their databases with almost no delay (compendium) after a new rulebook comes out. We can expect the same for the character builder. How in the world does Wonko want to implement the gazillions of choices coming with PHB II? I rather spend the handful of dollars and save tons of time with something that's really well done and official (!), plus the compendium and access to the magazines.
I also want to say that I think it's not a rip off. There is staff to be paid for this work, and despite all their failings, we now have something that's worth paying for.
Not all regions of the world are wealthy, and D&D players are not only Americans. For Poles, for example, it still seems unusual to pay for an online feature every month... though most Poles could easily afford it. There are lot of people who are not fanatics but just regular players all over the world. Such people would not mind delays and keep using free tools instead of having to pay.
That said, I do admire and appreciate Wizards' work, though I think it would be better if they had us pay once for every new material (e.g. you could unlock the MP features by buying your unique special activation code for it ONCE but for a higher price). Wouldn't it be a better way than forcing people to pay every month, even if they don't use it so often? Another example: some people use only two of ten supplements. Should they pay the same amount as the people who want access to every single option Wizards came up with?