The LW is dead quiet from packing to getting it on the tree to climbing. Once set on the tree it is more solid than the Summit and it won't move, creak, crack or make a sound. The Summit is bulkier to pack, makes more noise when setting up and is a little more of a pain to get on the tree, esp in the dark. It doesn't secure as tightly as the LW when set. The summit is FAR more comfortable than the LW. I've not used the new sling seat but can't think it makes that much of a difference. The LW is designed to be quiet, easy to get on the tree and portable. It is not designed for all day comfort.

I have not had issues with the seat as has been discussed. I have had issues related to the size of the seat portion. Not sure how big you are Jeff but the stand is small. I'm 6' 00" and 210lbs with an athletic body type. The stand is too small for me. With regular hunting clothes on I barely fit between the seat rails. The buckles of my harness don't fit. I have to be very careful when I stand up not to catch a buckle on the seat. If it catches it pulls the front of the seat up and it slides down a little. Pull up on the seat of any climber and it will slide. That is my biggest complaint with the stand is the size of the seat and I'm not all that big.

That said I love the stand if when on a trip and jumping from area to area or if setting up close to a bedding area. It packs better, and is MUCH quieter than the Summit, goes on the tree easier and is a more stable platform. Other than the size it is flawless for jumping areas and getting in and out quiet. If I'm planning an all day sit I wouldn't even consider the thing. I'd rather leave an hour ealier and take tree steps and a hang on and put that up to sit all day than take the LW. It has its place and its purpose, you just need to know its limitations.