Hi! and welcome!
First thing first, you might wanna find out which switch suits you most (linear/clicky/tactile)
than you would go from there to the heaviness, if you like it linear and heavy go for blacks, but if blacks are too heavy go for red
and from there you would look for form factor, TKL?60%?full size?
and than backlit or no backlit
after you get those thing sorted, than we can talk budget
I assume you live in Australia? if yes I think
http://pccasegear.com/ is your best bet
Lastly, different keycaps profile and materials would give you different typing experience. But let's decide on the board for now