There is a Celestron Nexstar 5se for sale in my local area. Owner says it was used once, and he is asking $500. This would be my first telescope. I've wanted one since I was 8; I'm 59 now, and I think it's finally time! I am comfortable with technology/gadgets/computers/star charts. Not interested in astrophotography. I am interested in DSO and portability, as I will have to travel to get away from city lights. Am wondering whether to buy this or spend big bucks and get a 6se. i.e. would I be disappointed in the 5se?