I like their MANY options of keycaps, products, etc. I will say they have gotten better over the years in terms of their quality assurance, but they have solid customer support which redeems it. Bought a blue on gray keycap set from them, and noticed how badly done the doubleshot was on the pbt keycaps. It was an older set though, but I notice now they have much better quality, so I suggest looking anything that is more recent from their selections.

KPrepublic is a site that has a lot. They have their own lines keycaps and they're sellers for soem nice looking keyboards. They have switches and all kinds of other accessories. Not all of their stuff is high priced, but everything seems to be of decent quality. I particularly love their Ghost Judges keycaps, which, while clones, are high quality and very affordable. I highly recommend them and you can almost always find discount coupon for buying through their site (but I have never gotten one of their Amazon discount codes to work, lol)