I use both, but while comparing different options and checking upgrader.pro promo codes I found that regular markets suit me better for planned purchases, while upgraders are more interesting when I’m willing to accept some risk. Upgrader is a company operating a CS2 skin website focused specifically on the upgrade mechanic. You put one of your skins at stake, select a more valuable skin as the target, and make an attempt. If you win, you receive the better skin; if you lose, the skin you used is gone. Since the company concentrates on upgrades rather than offering lots of unrelated game modes, the platform is simple to understand and quick to navigate. I’d choose a market for certainty and an upgrader only when I’m comfortable with the possible loss.