A spotting scope has it'splace. On the range you use it to see bullet holes at long distances.
When hunting you use the binos to find the game, then you use the spotter to ascertain the trophy quality of the animal. But this is usually used in the west's wide open spaces.
If it is a choice between binos and a spotter, your first purchase should be binoculars.
If you are going cheap, check out the Nion Action series and the burris landmark. Also the Bushnell natureview.
good luck