Welcome to geekhack. There are a ton of keyboards to pick at from stock built, to custom made. Different layouts, different switches...
If you wanna jump right in, find what switch you think you would like best, and what stock board you like best. Im currently on a KUL with Gateron red switches.
You might not want that, its what ever your into.. tons of options. 50$ keyboards to 400$ keyboards. It's your money, use it when you need it
And btw from what I've read, there is no perfect mech keyboard as your always chasing that magical dragon. Don't do heroin. Its just a keyboard