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They're an excellent focuser Benny. Speak with Fred (Bassnut) about his TCF-S. There are pros and cons you should consider when place items in your optical train. TCF will change your focal length/ratio depending on its length. Generally, this isn't an issue because you will have ample backfocus on the LX200R.
Compared to a rich field refractor, you want to really minimise what is in the path to keep those wide views. This is where something like a RoboFocus is good (its also temperature compensating). Its "non-intrusive" and attaches to your existing focuser - be it an SCT course knob or crawford drawtube type focuser. You can also get a RoboFocus set up to focus camera lenses with extreme precision for wide field work. I'm more of a RoboFocus person myself, but you can't go wrong with either. There are also plenty of others on the market such as the FLI Precision Digital Focuser (PDI) etc list goes on and on.
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