I'm currently using the Ttesports Challenger Prime. Not a bad keyboard, for a budget, but it works. It does feel somewhat like a toy, though. It's also somewhat gimmicky if you ask me, though.
I've heard so much about mechanical keyboards, especially from a few friends of mine, but I've never actually had the apparent pleasure to try one. Since I'm a penny pincher, the prices of mechanical keyboards do worry me a bit, so I haven't quite gotten the courage to take the plunge, as I'm not sure if mechanical keyboards are all they're said to be. I'd love to actually be able to use one before purchasing one and possibly not being satisfied.
And good luck to all.