A microphone is an investment. The technology is stable so next year's
model will be pretty much the same. They last almost for ever so be brave and
buy quality.
A good, solid stand is vital. You do not want the stand to transfer
vibrations.
Another good investment is a 'pop' screen that intercepts the Ps and Bs. You
can improvise one of these with a piece of thin foam rubber that removes the
'wind' from the vibrations.