I buy Organ titanium needles and they seem to last forever! I have pieced about 6 quilts and quilted at least 4 quilts on the needle I am using now. Not sure how many hours that is, but at least 50. I am starting to notice the popping sound when the needle hits the fabric and was just thinking earlier today I should probably change the needle on my Juki and the blades on my rotary cutter.