You're about to get a lot of people telling you that it's all up to personal preference. And they're right.
If you tried blues and they're great, then get blues. If you don't have the money to buy multiple keyboards, then start with what you know and like as a baseline, if you feel the urge to buy another board down the line (and you will!) then do so. Blues are a great place to start.
That said, some general opinions are that blues are great for typing and RTS games, red/black linear switches are better for FPS due to the ease of double tapping but less pleasurable for typing, and browns hang in the balance between.
My personal experience: don't like blues for gaming (SC2 and Quake), have had browns for over a year now and like them well enough for gaming and typing, but recently bought a cm storm with reds because I think I'll like them better for FPS.
Don't overthink it, if you have a rubber dome right now, you have nowhere to go but up.