Hi Ed,
Fairly regular question.
I had my doubts before buying one too.
But price (bang for buck) and convenience helped me take the plunge.
Disclaimer: I can only speak of my experience, and that of several other friends who have these scopes. Which is all good!
But I imagine there are others who may not have been so lucky. (Such is the way of mass produced scopes)
As Pat has said, collimation holds Surprisingly well.
I have previously owned a 10" SW collapsible and now a 12" SW GoTo Collapsible.
Although I do run the laser collimator over it every time, (and it is a very good Hotech self centering with cross hairs), it is only ever out a "smidgen". Even after travelling over very rough roads to our remote dark sky sites. (Albeit sitting upright in the passenger seat for safety)
Occasionally I double check with a Cheshire. Yes. I am that perfectionist.
It always holds collimation through the night session.
And I do use Televue eyepieces and paracorr of weight. Occasionally with counter weights.
I have never had in focus or out focus problems with any eyepieces.
(Making sure your collimation screws on the primary are not fully one way or the other may help here. That did it for one friend)
I can't speak highly enough of the quality of the scope, or the convenience of the collapsible feature.
I have no hesitation in recommending it. And if buying new, there is a good warranty to safeguard against a "dud".