I am so torn... I just got the Ultimates GitD Mutagen Man and Metalhead very recently, and the nostalgia has hit hard.
The NECA are great looking, but I always worry about NECA QC, which is why, while I have found almost everything (for the Target show design ones) except the April O'Neil 2pack, I have only opened a few, and they have been very recent (like wanting to compare the Metalheads).
I am starting to taste the Ultimates, but my wallet does not like it... Also does not help that I had tons of the toys, but did not watch as much by the time they were on the show.
Also, I really wish they were either 6in scale or 1/12.... My figmas, figuarts, Revoltech, and the Hasbo 6in lines still look pretty good together. These tower over too much...