I have an older Noga, it's great, bought a new one, and here is what I had to say about it in another post:
I bought a new Noga just under a year ago. After using it 3-4 times a day, 5 days a week, and I can say i'm not happy with it. I do have the one with the fine adjustment on the head.
I love the mag base. I love the arms. The plastic knob is fine. It feels good in my hand.
the arms are good as well. they come tight and stay put.
here are my gripes. The adjusting head works ok put has to much side to side slop for my tastes. and there is no way to tighten it. The small swivel inside the head is pretty hard to keep tight. The spring in the head is to weak to hold up my Mitutoyo digital indicator. it holds my Starrett dial indicator just fine.
I figured that the head MAY have been worn out, even though the machinist next to me had had his for 8 years and its still fine, so I ordered a new head Just that little part was $45. The whole thing was only like $100. Guess what the new head was just as loose as the first one.
On a while I bought a $20 China one from eBay, I like it. it has the 3/8" and dovetail mount, the arms are just as nice as the Noga. I just swapped the Noga base on to it. The China base worked fine, but the switch and finish are nicer on the Noga.
Your mileage may very. I wouldn't buy a Noga again, I can wear out 4-5 of the China ones and still break even Keith
As to my not knowing how to use it, I'm a machinist by trade, pretty sure I'm capable of using a mag base.