Starling Technologies offers some great LED kits for a variety of interesting kits. The support from the owner Stan is superb and very responsive.
If you enjoy the Anime kits, this is the place to get them. They also make a great set of nippers, which can be found on Amazon, just search for Gundam Planet or click the banner above.
Another great LED kit supplier for Fine Mold and Bandai Star Wars kits, along with 1/48 scale Aircraft. The owner Warren is great to deal with. These kits are hand made by Warren, so there is a backlog for popular kits.