I've had both. Didn't like the older style of NECG where you couldn't remove the aperture to 'ghost' it (maybe the new one is different?). I ended up drilling out the aperture on my 77/44...pretty easy and makes a big diff.
However, once I went Skinner (with NECG partridge front) there was no going back. Much sleeker and taking out the aperture gives you a great ghost site with quick acquisition. I've got another coming for my 9.3 Mouse.
Here's some pics of the one on my RSI...