Reply to Any new or old free, Hi-Quality Vst instruments?

I've been using only free vst instruments ever since I started producing at the age of 13. Now, I've learned plenty over the few years being on and off making electronic music. I currently use Ableton live intro on PC and I only use free vsts (excluding the ones that come with the boxed version of intro). I usually use Tal Noise Maker and Voyager to create my sounds. They are great vst instruments but I need to know any other vsts using any kind of synthesis that has a decent sound. I just want to expand a little one step at a time. Please help? Thanks.