I bought the LXD75 SN10" 12 months ago and am very happy with it. With my very little experience and my very big scope (and 350D), I've managed to get some great shots. It gets a thumbs up from me.
If you are happy with it then why do you want to spoil the bliss by asking such a question? But I'm sure there will be people here who can tell you if you really want to go that way. But ignorance is bliss... and much easier on the wallet than the alternative.
Although equipment can always be improved upon, from the dizzying array of choices available you have ended up with a good scope and a good mount. All that matters is that you enjoy using what you have.
-Tony
But I'm sure there will be people here who can tell you if you really want to go that way. 
But ignorance is bliss... and much easier on the wallet than the alternative. 
