If you're measuring your intake, weighing is the way to go. It can be significantly more precise than measuring by volume (i.e, by cup or tablespoon, etc). For weighing food, I've read that grams is the most accurate.
I use the EatSmart scale. $20. I've had it for years, and it works great. I'd def recommend it to anyone who wants a food scale.
https://www.amazon.com/EatSmart-Prec...+kitchen+scale
$20 is shown as the sale price. My order history shows that back when I bought it in 2013, it cost $25.