I was faced with the same dilemma a few months ago and decided on the LX90 because I wanted to dabble in astrophotography. I'm very happy with the LX despite some initial teething problems (with handbox software) which were corrected with a simple software update. The biggest advantage with the LX is that you don't need to know where everything is to enjoy the sky and of course tracking. Meade are also releasing bigger LX90's. The LX90 is nicely portable, I leave mine on the tripod and simply carry outside when the need arises. The LX90 also comes with free LPI and autostar software which allows control of the OTA from a laptop. The problem with a newt will be the sheer physical size on the mount as any movement will be amplified by the length of the OTA. Information on this site may help with your decision.
http://www.users.bigpond.com/lansma/ 