When i was a kid i had all types of small or "toy" scopes i would use for hours in my backyard. Now that im older and have money of my own to spend, I decided to get back into astronomy. A couple months ago i bought a SVP 127mm Mak. cassegrain, which turned out to be a really nice piece of equipment. Although, I am looking for something a little bigger to satisfiy my large appetite for viewing the night sky and deep space objects. I am looking to see better surface details on mars, the 127 just doesnt quite cut it. Also looking to view more detailed objects of some faint nebulas. I was just wondering how much better the quality of planetary and deep faint objects i would get if i upgraded to a 150, or preferably the 180mm Mak. money is not an issue. Can someone please let me know before i spend a big chunk of extra change.