Welcome to geekhack
In terms of a great starter board, I always reccomend the keychron k8, it is a great value for the price.
If you want something similar to rubber domes but better, than topre is where it's at. Look on japanese marketplaces for good deals on topre boards (hhkb, realforce, leopold) they are a bit more pricey than the keychron, but they are worth it.
Hope this helps.