Craftsman has served me well in both a 3/8" and a 1/2"...but your requirements are incompatible - you're not going to find too many 3/8" that start at 5 lbft, go up to 100+ lbft and cost under $100...for example, the Brownline looks like a great wrench, but it's a 1/2", and goes from 15 to 150 lbft...not exactly what you said you're looking for...
If you want 100+ lbft, you need a 1/2"
If you want 5 lbft, you need a 3/8"
Pick what's more important to you...or, if you can find Craftsman on sale, you might be able to get both a 3/8" and a 1/2" for close to your budget...that would cover your range...