While all firms are commission based in one form or another, it really all depends on how actively you plan to trade. My firm offers accounts with flat quarterly fees that are based on the account value, you can trade as much as you like. We also offer commission based accounts with a low annual fee for less frequent traders. You can also select a managed account, where a money manager handles all of the investments. The possibilities are vast!
The most important thing to you is to feel comfortable with your advisor. I would recommend calling around to several different firms and see what they have to offer and compare fees. Keep in mind, that sometimes the firm with the lowest fees may not offer the level of service you require, so you'll need to take all aspects into consideration. If you are not investment saavy, it might behoove you to go with a reputable firm with an advisor who can guide you. I would never recommend someone just put there money into a company without knowing as much as possible, which is where a trusted advisor would come in.
Everyone has commercials on tv and different advertisements, but those ads aren't going to show you the full picture.
For 529 plans, we always suggest American Funds College America Virginia. You can diversify into several different asset classes and they perform very well. You might want to give them a call or visit their website.
If you want some more detailed advice, feel free to PM me. I could set you up with an advisor in my firm if you wanted some free advice. The phone call is free and you aren't bound to anything, but he could give you some ideas on how to proceed. Trust me, my team is NOT about rambling, high pressure selling tactics; if you want to deal with us, you will, if not, no biggy.