***Mini rant below. These are purely my opinions!***
I don't know what it is, but I absolutely loathe the China Glaze Tronica collection from the core of my being. This sounds insane.. I know, but I really despise them. They are sad excuses for holographic polishes. Their "holographic silvery-ness" overwhelms the pigmentation of the colors. Plus, the "hologarphic-ness" is hardly holographic. I feel like people new to nail polish collecting and blogging are getting jipped with these "holos". There are better holos out there. They may not be easiest to find, but they are out there!
Some great holos come from the Sally Hansen Nail Prisms Collection. Here is a nice one. :)
Instead of just ranting on and on about Tronica, I would tell you all some of my favorite holo polishes, and how you can get them.
Sally Hansen Nail Prisms- This collection is no longer out, but they are not difficult to find and they are not expensive. You can find these on eBay or Amazon. You can also find some on Cassie Cosmetics. I've seen these go between $2-$6 average. You can find out all about the Sally Hansen Nail Prisms and swatches on Vibrant Point of View nail blog.
OPI Designer Series- There are some discontinued colors in this collection, but there are still a handful available online at TransDesign for $7.25. You can also find these on eBay, Amazon, Ulta, & some other beauty supply stores for varying prices. If you see them for a higher price they are most likely the discontinued ones. You can find many of these swatches on Scrangie- Part 1, Part 2, & Part 3.
China Glaze OMG & Kalediscope- These are more difficult to find, and they are at a higher price. You can find these on eBay, but personally I wouldn't pay more than $15 for them now. I also see these on many blog sales, and have heard of people finding them at "dusties" for a lower price. Swatches of these collections can be found on Scrangie- OMG & Kalediscope.
Milani 3D Holographic- These are definitely not the best holographic polishes, but they are good. I like these better than Tronica. I think they have a stronger holographic effect. These are also the easiest to find. I've seen these at Walgreens, Target, KMart, & CVS anywhere between $3.50-$5.00. Here are swatches on Scrangie.
The rest are holos I have not had personal experience with, but have heard many rave reveiws about.
Nfu-Oh- They have a few holographic polishes, #61 is most popular, but is currently out of stock. They also have other colors. You can find them on FabulousStreet for $12.50. There are a few swatches of these on The Nailphile .
Nubar- They released a collection of holographic polishes called the "Prism Collection". You can see the collection on Scrangie. You can buy these individually for $9.49 or the entire set of 8 for $59.95 on Nubar's website.
Glitter Gal- This is a brand out of Australia. I do not own any personally, but I've heard them reviewed very highly from blogger friends. I'm not 100% sure on the price, I'm pretty sure they are pricier, but from the photos I've seen they seem worth it. You can read reviews on them on Scandalously Polished & Also Known As. You can find these polishes on Glitter Gal website.
I've also heard great things about Gosh- Holographic & Make Up Store holos. I don't know much about these or how to find them, but if anyone has more info please let me know in the comments.
Sorry, to be all ranty about Tronicas. I know some of you love them, and that's totally fine! I'm sure it's nice to have a holo collection out there if you were not around for earlier holo collections. I'm sure I'd be all over them too. I just wanted to share that there are better holos out there that you can find now. :)
P.S. If you know of any other holos out there that you like, please let me know in the comments!