Variant Option Product Options

I've used VOPO for a number of years now, and am very pleased with the functionality. Having tried several option apps, I found VOPO to be the best by far.
I particularly like the conditional variant options for products where there are a lot of selections to make - it keeps my product pages clean and not overwhelming for customers.
The customer service is excellent, Jon & Martin recently helped me with some coding to hide out of stock variants, and they really couldn't have been more helpful :)