The Realistic icon set, developed by a renowned icon editing software company, offers modern and Windows Vista-inspired icons. This timeless collection ensures up-to-date graphics for five years and includes vector sources for customization.

But there is another option. For less than $300, you can get a royalty-free set of over a hundred all-purpose icons that don't sacrifice quality for affordability. After scouring the market ourselves, we landed on Lokas' Realistic icon collection. It ticks all the boxes: it has a modern look that fits with Windows Vista, there's a large range of different icons (rather than just slight variations on a few basic designs), and the icons come with full vector sources.
The latter is particularly crucial. After all, it's often small changes that give your custom icons the unique flair that you're after. But tweaking icons can be tricky unless you're an artist. Thanks to Lokas' vector sources, you'll be able to modify or even construct new icons with ease - without needing to rely on someone else's design skills.
Finally, it's worth mentioning that Lokas doesn't just offer one icon set. They have a whole lineup of sets, and they're constantly expanding their collection. With every purchase, you'll get free updates to the collection as they release new icons. So not only are you getting high-quality icons at an affordable price, but you're also future-proofing your investment.
Version 4.0: Color variations added