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I've had my 16" Lightbridge for around year and I love it. Apart from being a bit large to move around (I still use my 10" around home).
We had a mini Messier marathon here in Perth a while ago and it really worked well, in fact the problem that slowed me down was I could see so many galaxies in the Virgo & Coma clusters, picking the correct object was the problem.
I didn't particularly like the included red-dot finder and have replace dthis with a Telrad (which I swap between scopes) and I couldn't really use it until I fitted a shroud - this wasn't due to stray light but due to my paranoia of dropping an eyepiece onto the main mirror will changing eyepieces.
The Altitude brake is mediocre and you need to make some kind of counterbalance weight arrangement to balance the scope, particulary when using heavier eyepieces.
I do get a bit of collimation shift from horizontal to upright position which I'm trying to nail the cause - I hear this is not uncommon. I have purchased a laser collimator that will allow me to easily check/fix the collimation during the viewing session.
I have also heard a number of people stating that the optics aren't upto the Obsession standards, this may well be true but taking into account that I paid AU$2195 brand new there is a massive difference in price.
I have fitted an Argo Navis now and have found this great and certainly optimises my observing time.
All in all it's not perfect but with few inexpensive modifications you can have a large apeture scope that's a joy to use.
Let me know if there are any more specific questions you would like answered.
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