What kind of accessories do you want? Do you want a case with goofy cartoons and tons of color? Do you need a super-tough case because you are had on your phone and work at a constrution site, or do you have an office job and just want to keep the phone from getting scratched? Do you need/want a car dock or a dock next to your bed? We can't suggest which accessories you want. But tell us what you want, and we can help point out the good, the bad and the ugly. Welcome to the forum, and hope you love your DX as much as I love mine!
By the way, I have a Rocketfish case from Best Buy and the clear screen protector from Verizon. Love the case. The screen protector is OK; a little bit of orange peel, and sometimes my finger doesn't slide across it really well, but it's OK. I will replace it eventually though, there are better options out there. That's all the accessories I have.