I actually own both SL 4AA ProPoly LEDs and UK 4AA LEDs and find the two both be great but have very different characteristics that lend them well to different uses.

The SL ProPoly has fantastic throw due to the relatively narrow beam, but is not the best for closeup lighting, such as walking a path at night. I carry a SL 4AA ProPoly in my truck and use it when Scoutmastering in case I need to search for Scouts off in the distance (it happens), but I much prefer using the UK 4AA when walking trails, working at the campsite, or inside a tent.

OK, the truth is that the UK 4AA LED is getting less use these days because more and more I'm using my Princeton Tec EOS headlamp when walking trails, working at the campsite, or inside the tent.

Though it is more than $30 ($34) I would STRONGLY recommend the Princeton Tec EOS headlamp. It is powerful, tiny, and somehow (magic?) it is always pointed at the direction I'm look at. Look Ma, no hands! What a great light.

If you HAVE to stay under $30, I'll second the vote for the Rock River 2AAA from Target. Nice little lights that I have scattered around my home.

Ken K.