I am a regular user of Voxformer and Elephant, they are in every mix that I do, I recently needed punch up a guitar to give it a real lead feel and Boogex was just the ticket to a great sound. Boogex is another winner in your arsenal.
I like this plug a lot. The ability to load IRs is a very nice touch. This amp sim is very very good at making outrageously distorted f'**ked up guitar sounds like Hendrix at Monterey, the Stooges or "I heard her call my name" by Velvet Underground. It's also capable of some very nice retro "dirty-clean" sounds.
It's perhaps not ideal for faceless hi-fi wall of distorted guitars like all those American nu-rock bands, but that's not my bag anyway.
I thought I'd drop you a note just to say that I have no negative issues with the plugins. I like using all the ones I have and love the sound. I find them easy to use and understand. The pricing seems very fair to me as well. I also wanted to especially note the look of the plugs. I prefer the straight forward layouts as opposed to very elaborate GUI's or emulations of "vintage" looking devices.