I really don't know much about these things, I apologize. I don't play anything in particular, I'm just going to take it step by step until I get good, and if I'm still interested, by a more expensive Keyboard. In terms of how many keys, I'd prefer 88. I really know nothing about keyboards, I'm sorry. Basically, the keyboard that is closest to a regular piano is probably what I'm looking for. Just something to get me going. Any extra features are nice, but not necessary. I don't know what weighted action is (weighted keys?). If it allows me to play the most like a regular piano that would be great. Essentially, I want a keyboard that most resembles a piano. Sorry I'm so vague but I don't have much information on the topic. Oh, and price. $400 is probably my max for this. If there is one that is significantly better for a little more, I'll consider that too. Like I said, if I really enjoy it, and want to continue to get better, or enjoy playing a particular type of music, I'll look into getting a more expensive one when the time comes. Thanks for replying, and thanks in advance for any other info you provide!