I have them. Totally worth it. IMO this is one of those purchases that you go big with. I absolutely love them because I have the option of zooming in/out, and I use that option. TBH most of them time I'm using 5x, but I dial it down to 4x very often. Plus they are made with Konica Minolta optics, and the clarity is out of this world. I have zero buyers remorse. $1K in the grand scheme of things is nothing when you consider the value of your eyes and hands.
Think of it this way, do you regret your first loupe purchase? Was it because it was more economical? If so, do not make the same mistake twice. I'm not trying to put you down, I just think certain purchases should not be so financially restricted. You will be using these every single day, for years. And after you get used to them, you cannot imagine using only a 3.5X.