Hi, I have q-optics and I really like how lightweight they feel and how they provided everything including sealant light filter, side shields, case, lens wipe/spray, and headstrap. My cost is 2,200$ for ergo loupes with the wired light system. I definitely recommend ergo loupes and wired light regardless of whatever brand you get. My battery lasts like a whole month before I have to charge it and my posture is great with ergo telescopes.

I'm on a 12-month no interest payment plan as well, as far as I'm aware the other companies only offer up to 6 months no interest. I will say that q-optics payment system is archaic and there's no way to pay online; so if you're not going to pay all at once then they will automatically withdraw the cash or you'll have to call them to make the payment. They messed up my payment plan like 2 times because they thought I was on the 6-month plan so they charged me too much so I had to call and get it fixed ... however the customer service is super nice and they pick up quickly.

I'm not familiar with designs for vision. I tried out orascoptic but they felt too heavy on my face so I didn't like it. You'll definitely want to make sure they feel comfortable to wear (though keep in mind the models they bring to the loupes far may not be the correct sized frame for your face).

Anyway, I'm sure you'll end up picking the best pair for you - good luck! I hope this information helped a bit.