I had a Longacre digital one for awhile, until I realized it was 2 lbs off, then it hit the junk pile. One of the nicest I’ve ever used is the Intercomp digital, but it was pretty pricey at nearly $300. The one I use now, and that is quickly becoming the standard with tuners, is the Hi Prema, made by Prisma. KartSport distributes them and they are generally around $200. It has a 76lb max, with .1 lb resolution and a 4 tire memory.