All in all I ordered 6 different vests: Glaais, Hecusma, Eoyekli, Gotobi, Shallvio and Hothugz. That wasn’t my original intention however, I wasn’t satisfied with the first couple of vests. My requirements for this vest were:- Diamond stitching- Smooth, quality zippers- Snug fit and looks nice on, but not tight- Location of battery not awkward (behind the hip bone is ideal)- Clothe cover for zipper at the top so it doesn’t rub- Soft lining inside neck (ideal)I ordered a small; XSmall if it was available. I’m 5’4”, 125 lbs.Here’s my review for each one:EoyekliThis was by far the least favorable vest. The neck and arm holes were way too big – so much they looked funny. Not a good fit. Didn’t feel as good of quality as the others. No neck lining. Vest felt super thin and was an easy “no” in my book.ShallvioThis is a nice jacket but the small was just a little big – not bad but if it doesn’t touch your body, you won’t feel the heat (just like motorcycle heated gear). Zippers good, quality good. No other issues on this one.HothugzI wanted to like this jacket – soft lining, good fit, good zippers. However, the zipper at the top was rubbing my neck and after wearing in the house for a while it was annoying. Good quality. I really liked this jacket but just couldn’t deal with the zipper at the neck.GotobiI was going to keep this jacket. Good fit, soft neck lining. However I hesitated due to the pocket zippers – they’re the same type of zippers as on a pillow cover. Very thin and they were getting hung up. I kept zipping up and down over and over and they got smoother so had planned to keep. But when I tried to wear it with the battery on, suddenly it wouldn’t turn on. I tried everything but couldn’t get it to work so I sent it back. Hence ordered more vests.HecusmaThis is a good vest but just didn’t fit snug. Good zippers, etc. Just too roomy.GlaaisThis is the jacket I ultimately decided to keep. Perfect fit, looks attractive on, good zippers, good quality build, soft neck lining. Battery works as expected. It has everything I was looking for. My only complaint is that when it arrived it had already been opened, someone clearly had worn it, etc. It had a couple spots on it – something white but I was able to rub it off w/o an issue. Battery box had been opened, etc. Tags were even detached. I could have complained and sent back but it was ok to keep. Clearly no one had checked it when it was returned and that could be because the person returning it marked it as unopened. Either way, I love it.All these jackets are roughly the same. Quality is important but so is fit. For the best, warm results the jacket needs to touch your body. If you wear a sweater underneath, you may not feel the warmth if it’s super thick. I originally had ordered the Dewbu heated jacket which is nice however, the small is too roomy and I don’t feel much heat unless I wear a coat over it – then I feel the heat. So I figured a vest would be better because in really cold conditions, I’ll wear a jacket over it w/o feeling bulky and that’s exactly what happens. I hope this is helpful.