If you're doing the work yourself - buy what every you want or can afford - it's your time you're throwing away.
If you're paying someone else to change the clutch, dig deep and get new and buy decent quality, nothing fancy, Exedy or similar - OEM isn't necessary - the labor cost to drop the transmission twice isn't worth the supposed saving - change the pressure plate, throwout & pilot bearings and rear main seal whilst you're in there.
Edit.
You didn't say what vehicle - if it's a cable operated clutch - check the adjustment - you may be able to squeeze a few more miles out that way.