Just to be sure -- not ONE cut off saw... SEVERAL! You'll use them in various situations - so you need straight - 90* - a body saw is helpful too... and LOTS of blades for it... two or three different grinders help too... so all in all - about a dozen should just about get 'er done!!
Merry Xmas. I buy new ones for my wife every year... She doesn't use them much so she let's my borrow 'em.