I'll be honest here. This was my first RC. I was very nervous about collimation because of all the talk I've heard about how difficult these can be to collimate. Truth be told, if you have the right tools, Collimating eyepeice and nice Laser collimator, it's really not hard to get good collimation on these scopes. My first light with this scope was a very good experience. Got a wonderful image of M81 at a focal length I'd only dreamed about before hand. If you're somewhat experience already with newtonians then go for it. This scope will not disappoint for imaging or viewing.
I have purchased one of the first units of this scope imported by OPT, but it is a proven design that has been sold under various brand names for a while now. This telescope works very well, but collimating it is difficult. Sooner or later your primary will need adjustment and the fun begins from there (if you call spending hours collimating a scope fun). Once you understand how it is done, it gets easier and easier, but it's not as simple as an SCT to collimate. On the other hand, the scope is faster than a typical SCT, it cools down faster due to the open tube design and works pretty much as advertised. People complain about the focuser being attached to the primary mirror causing the primary to tilt and loose collimation. I have not experienced this with the 8" version, maybe it is an issue with the larger versions. However, you still need to buy a tilt plate so you can adjust focuser tilt. I have had to significantly tilt my focuser to reach good collimation. The scope has 2 miles of back focus, so you can install a good focuser, a rotator, a filter wheel and a coffee machine. There is also no reducer specifically designed for this scope and most of the reducers people use have one form of compromise or another when used with this scope. Is it perfect? No. Would I recommend it? Yes... very few scopes at this price point offer what this scope does. So unless you have 3 to 4 times the budget, it is hard to get a better scope.
The TPO 8" RC telescope is a great buy. There are a few differences on the included items for the better. It states two ***** rails but bottom rail is a losmandy. Since I have a G-11 this is great. Also it came with three screw on back focus adapters to deal with the larger back focus this scope has. You just unscrew the focuser from scope and insert how ever many adapters you need to get focuser in right range. No slope in optical path that way. I did an initial out of focus star test and it was not very far off from perfect. I cant wait for the next new moon to come to due some imaging with it. If you are looking forward to buying a RC telescope this is a good scope to start with and while they have there 15% discount you cant go wrong.