I have not used brixly, so I cannot compare them fairly. What I would compare is what a reseller actually feels after month three:
- WHM limits per cPanel account: number of accounts, disk and inode caps, and whether overselling is allowed or enforced. - Location. For European clients, a UK or DE datacentre with a published network page beats a vague "EU". - Backups: what system, how often, how long retained, and whether restores are self-service or a ticket. - Mail: outbound limits per domain, and what happens when a client's WordPress gets compromised and starts sending spam. - Support: open a real pre-sales ticket and time the answer, and ask whether they migrate existing accounts for free. - The exit: can you pull full cPanel backups on demand, without asking support?
Buy the smallest plan first, run one WordPress site and one mailbox on it for a week, then decide. That tells you more than any recommendation thread.