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Hi Danny,
no doubt you read my review of the need to flock the RC8 that I have. It was the second batch of RC scopes made by GSO and since my review the baffle tube has been redesigned to eliminate the need for further flocking.
I have an RC12 now and that produces very good results. The RC10 has many good images taken with them and you can find quite a few of those published right here.
The focusor is really a must if you want to do a lot of imaging with the scope. Base model focusor is just not up to scratch for imaging. It produces inconsistent results and flexes quite a lot.
As to collimation this is a given with any reflecting telescope. I suggest you take a look at a few sites on how to collimate an RC telescope so that you can undertake the task properly. It is quite easy when you follow the instruction. Ken Crawford has a video for collimating the rear cell but most times you don't need to worry about adjusting the rear assembly.
Let us know if you have any further queries.
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