Thanks Doug,
This really helps. I am thinking of a 2X or 3X barlow, so my scope will get to around 300X if I use the 10mm eyepiece and with its 1000mm focal length. I am a bit surprised they included only a 10mm and 20mm eyepieces. They are supposed to be Plossl ones but I cant see any markings on them apart from Super - 20mm etc. If the 20mm is effectively a 10mm with a 2X barlow, so thats why I am thinking a 3X would give me better value than the 2X even if the 3X on the 10mm eyepiece may be pushing the setup a bit far.
Any ideas on how much to spend? I have seen barlows of the brands listed by you for around $50 and up, what's the rule of thumb? The idea is that I can get a bigger view of the planets and nebulas I want to see, without too much money. A 4mm quality eyepiece a better idea?
Probably the same question again, sorry.
Chris