i found the fuzzy poi from HOP to be too light. it depends on what you want to do, though. i prefer heavy poi because it makes learning technical moves a little easier since they fly slowly compared to light poi. you can also feel them much better with different driving styles (spin, anti-spin, extension, isolation, float, stall). light poi tend to just want to spin real fast without much consideration to your input.

if you want to keep spinning in the glowstringing style, i would recommend light poi on colecords. particularly if you want to focus on "wraps" that are more like "bounces" the way glowstringers do. sock poi tend to stall on the body instead of bounce.

otherwise, socks are the way to go. just take a latex balloon and fill it with dry beans to your desired weight, tie it off, and put it in a sock (just a regular "crew" sock, doesn't have to be a tube sock or knee-high, they will stretch out). tie a knot at the open end of the sock for a handle. this is the best poi for learning because the bean bag is gentle and easily customized for weight. you can also put another balloon in the handle filled w/ a denser material like rice (i use 1/4" steel shot in my handles, which you can get anywhere that sells hunting supplies) for a counterweight if you want to get into throws.

also, socks are very forgiving with untangling. string/colecord poi can get very frustrating when they tangle. also, i find socks easier to do tricks that intentionally tangle like air wraps and hyperloops.

listen to nick if you haven't already: www.youtube.com/view_play_list especially this one: www.youtube.com/watch

soft, thick, heavy poi will move slower, tangle less, and not hurt you so much. I recommend going for the heavy end sock poi at fist and progressing to a lighter set as you get more comfortable with the physics. Find the less stretchy fabric too. Stretchy becomes an avoidable variable that gets in the way of my play.