Good on you for wanting to have the equipment for keeping track of your snake and its food items.

I posted a similar question not too long ago. You can read the thread here: What scale to buy?

I got the impression that the 7001DX was the scale of choice, both for professionals and hobby folk, so that's what I got. I use it at least once a week while weighing Salzedo and his food items. It is quite accurate, comes with several extra goodies (dish that fits snug on the scale, etc.) and was in my budget. It also goes up to 7000 grams (15lbs), so even if you get more BPs in the future, including larger females, you should be good to go.