Any Branding Experts Here?

We have an existing marketplace: FunnelRolodex.com, but we need to rebrand ourselves. If you're a branding expert, I'd like to talk with you. We need to consider a new domain name and a rebranding strategy.

I currently own this domain: goexperts.co which we've considered to position our marketplace as 'Experts' moving forward, but I've heard concerns about not using a .com. Another option would be to go the route of purchasing a domain from brandbucket.com, which would be a bit more expensive, but we'd have our .com domain name.

Any advice or recommendations?