I thought the kit was already available, but their site says it isn't until the end of the month...is this true? (don't see why it wouldn't be, but I could've sworn it was available)...

I already bought a diy-wb kit and have yet to assemble it. The question is, would the diy-wb kit that uses the NTK sensor be better than the techedge 2.0 or vice versa? At this point, it's about the same in the end for either (assuming I can get the NTK for around $200)...I saw something about the bosch sensor that suggested it wasn't as accurate as the older NTK, is this true?