I'm not "de-lighted" in this product -- I'm LIGHTED! I've had my little Pfaff Hobbymatic -- a "temporary" step-down I made 25 years ago when my dream-machine Pfaff 1222-e died, when I was in college for the 2nd time, anticipating finishing up and having a good job, able to get a "really good" machine in another year. Then I became disabled, and I've been limping by on the HobbyMatic (the name says what-all it does NOT have -- like adequate lighting!) ever since. We were going to be able to get me a nice, new, top-of-line Juki this fall, but the funds haven't come through, so I'll make do with the Hobby Matic for another few months -- but not with the lighting -- or darking -- situation!I first bought one of the other brands of lights, and when I was installing it, the clear gel padding arching over the top of the LEDs ruptured, leaving the wiring exposed! So, send it back, find a different one to buy.I chose this one based on reviews, including the woman who wrote that hers had broken and they called her and helped her get it going again. When mine came, it had no gel over the top -- just the strip of paper-plastic with the LEDs and wiring on them, out free. At first, I thought, "Not so good," and almost sent it back. I'm glad I didn't, though. For a couple of reasons.First, I put it on and it works great (and was super-easy to install!) Even the stick-up pads provided have done a great job so far (okay - a week - jury's still out, long-term, but so far, so great -- and if they do come off, hey, I have adhesives here at the house -- I'll come up with something - even if it's only "glue on some velcro and use that.") (And remember -- Xander's uncle on Buffy had the Velcro idea first!)Second, now that I think about it, that gel arch over the top was more liability than asset. If it ruptured _that_ easily -- I barely touched it and it broke! -- how well would it have lasted?Second, my Sig Other sat up and took notice when I told him that there was a kit available to use the other half of the lights. I'd been all set to keep these lights on teh Hobby Matic, and put the other half on the other machine when it came, but since we can't get it right now, we have decided to I told him to go ahead and get the adaptor kit to use on the bottom of the monitor arm over his desk, to help him see what he's writing in the monitor shadow. He had despaired of ever getting that section of his desk lighted! He's ordering the expansion kit tomorrow.Anyway -- for the first time, I actually have a bit _too much_ light under the neck of my machine. I'm actually wishing for a dimmer switch! (Hey, Inspired LED -- do you make one for this set of lights?) It's the one thing the other set had that this one lacks, that I'd like to have. Okay, so maybe I should knock off a tenth of a star for that, but I'm not gonna. I still love this light set.