I have an early Neuron Mocap V1 suit and it served me well over the years. The new models seem much better but at the time it was groundbreaking for me and the price was unbeatable at under $1500 for full body capture with finger tracking (32 sensors).
Compared to newer versions (Pro/studio) or the shadow suit you mentionned, it doesn’t have special shoe contact sensors or external hybrid camera systems, so running or climbing stairs or ladder always needs some manual work, and external props is very limited.
It’s sometimes a bit wonky, but it get the job done. Even if it means 2 hours of clean-up for 2 minutes of mocap, it beats 1 week of hand work for a few seconds of animation.
The only comparable alternatives at the time was the Rockocko suit.
XSense seems to still be the king of inertial mocap suits, but their price is still out of my range for my use.
The shadow suit samples look very good, especially the climbing ones, but it doesn’t seem to offer any kind of finger tracking.
If you get a quote on them, I’d still be interested to know how much they are.
For motion editing I mostly use Iclone (I don’t have R23 yet, so until now any kind of retargeting in C4D was impossible). It shares a lot of Motionbuilder functionalities (including HumanIK) plus some nifty little tools of its own (despîte a rather clunky interface at times).