I have the Gem Pro 300 on backorder through Brownell’s. Their forever warranty is why I’m not afraid to give this digital scale a try, and it is in my budget at the $145 price..I don't have the answer to that but I do know that if the 1500 goes hinky during the 8th month and there was a six month warranty by RCBS the are going to politely tell you to stick it where the sun don't shine.
Luckily, I bought it from Brownell's and had Brownell's EDGE. I shipped it back and received a full refund (not vendor credit).
I am done with RCBS and have since ordered only from Brownells.