heytwan, go tot new egg and search ssd and the go to lowest price. i think if you can shell out $35 for a 64 gb you should be okay for booting and also other small programs. i have a 500gb one but i can tell you, your start times and preformance will be amazing with that. it also depends on your computer specs as well. how much ram do you have again? and whats the processor?
definitely look at reviews too i you want to buy from there