When I started jigging I used a 3/8 ounce,I felt that it was easier for me to feel the bottom and really pay attention to what I was doing.The next challenge that came was hook up so I started trimming the fiber gaurd and its been all jigs since.And Power pro is a great way to help feel what going on below!
Try a few different jig type till you find the one you like and stick with it.
I prefer All-Terrian tackles Weed master jig It comes thru the weeds ok and ive had no problem when ordering them!