When I'm looking for quality, I go for Zap Creatives. The metal charms are always perfect, well cut, the team is nice and always got a solution.
I use the metal charms for my jewelry with gemstones, it looks so nice!
While I did have some issues with the initial proof the Zap team quickly fixed the issues after I identified them. The stickers look great and the vinyl feels very high quality.
I ordered 4 different double acrylic keyrings and they're all absolutely lovely - they arrived reasonably quickly too so all in all an easy 5* review.
Ordered a set of custom stickers, the first proofs needed some fixes but everything was done as instructed. The batch arrived in excellent time. The final quality is somewhat flimsier than I expected but I don't think it's a major cause for concern. The print quality is fine.