Well I installed a Flexion extruder this past weekend, along with the HT upgraded mounting bar/headbreak, and one HT hotend (This is because the stock QiDi hotend barrels are too small to fit properly on anything but a QiDi mounting bar.)

It was a pretty simple and straight forward process, and because I used the 'hidden' shopping page I got all the parts individually (Still came in a box, and all the mounting hardware, and stickers) I only spent $140.

It prints amazingly!!!!!! I will upload pictures shortly.

Short story is this thing is amazing, and I LOVE it! Such an improvement from the stock setup, even with new style printed extruder upgrades.