Hi guys I have been using my Nikon D3100 + 55-300 VR for around 6 months now and I am loving it! the only thing is that the lens is not the best in low light so because I do not really use the full 300mm (it is also soft at 300mm) I would like to invest in a 70-200 F/2.8 but I am just looking at it because I will probably buys this lens in the later months of the year because I need to save up but I have a couple of questions.
Firstly the lens
How sharp is it? is it sharp all the way throughout to 200mm?
How vital is it having VR, IS or OS because it is a lot more expensive with it?
How heavy is the lens? will I need a monopod or tripod to help me support it?
Now to the body
should I invest in a new body as well or is the D3100 good enough?
If I should upgrade my body the D7000 is probably the only body in my price range. will that be good enough?
Thanks for reading and any tips and feedback is very welcome