David,
Pop into Bintel and have a chat with the guys. You will get great advice.
Some of things you need to consider are, what do you want to see, moon, planets, deep sky, do you need to transport it, can it fit into your car if you do, where to store it, how easy is it to use, do you want or need "goto" function, do you want to observe or photograph the sky, and the list goes on.
The guys at Bintel will help you decide.
The best scope for you is the one you will use, often.
Clear skies
Rod
