I have owned this telescope for a number of months now, although use has been restricted by the lack of astronomical darkness over the summer. This is the first large aperture telescope I have owned and I was concerned about my ability to collimate the optics. I can say with the correct tools this has been much more straightforward than I expected and even though I dismount the telescope after each imaging session, it has also held collimation well. The key tool for me was the Takahashi Collimating Scope. This needs to be screwed to the end of the focuser to prevent play. The main challenge was finding a ferule adapter to do this. Once done its is straightforward to center the secondary. The primary can also be adjusted using this, but I found it easier to use a TS Colli instrument that I owned. I have not needed to make further adjustments at night after confirming the set-up using a de-focused star.
The disappointing part of this scope is the focuser which exhibits noticeable play. This becomes worse as extended. I have minimized this by adding a manual rotator which means the focuser does not extend out much from the draw tube. The connecting threads of the focuser to the body are not standard and upgrading the unit would need a custom adapter. Despite these issues I am beginning to take some pleasing images. I think the fast optics and the good match of focal length to the pixel size of my camera have been factors. The total assembly with camera weighs in at 18kg. Using an OAG guiding performance has been good on my EQ6-R mount, sometimes with errors below 0.4 RMS.
Check out some of my more recent images on Astrobin to see what is possible with this scope. https://www.astrobin.com/users/Alistair/