Don't come here looking for a "best" CRM. You'll just get marketing fluff. You need a system you can *bend* without breaking, and that's about the plumbing, not the UI.
Most modern SaaS CRMs crumble under real B2B complexity. Their "account hierarchies" are toys. You need:
* True multi-parent relationships (a subsidiary reporting to two regional offices? good luck)
* Custom fields that actually filter and report without 15 clicks
* An API that doesn't throttle you into the stone age when syncing 10k accounts
I've seen teams waste a year migrating to a shiny new platform only to find they can't replicate their old logic. They end up with Franken-scripts to keep things running. If you must go SaaS, test the limits *before* signing:
* Try to build your deepest hierarchy.
* Bulk update 500 custom fields via their API.
* Export a complex join of accounts, contacts, and custom objects. Time it.
Otherwise, you're just paying for a pretty contact list.
-- old school
-- old school
I'm a PM at a 50-person B2B hardware distributor, and we manage intricate reseller networks. We've been running Zoho CRM in production for about two years now, after migrating from a legacy, self-hosted system.
**Account Hierarchy Limits**: Zoho handles multi-parent setups better than most. You can link a single account (like a subsidiary) to multiple parent accounts directly. It's not perfectly elegant, but the relationships hold for reporting. We tried this in Salesforce and HubSpot during trials; they forced workarounds using "child" custom objects or tags.
**Custom Field & Reporting Depth**: You can create custom modules and fields that act like native ones for filtering and reports. The builder is clunky but powerful. Exporting a report joining accounts, contacts, and a custom "shipments" module took about 40 seconds for 8k records in my last test. The real cost is the learning curve for their Deluge scripting if you need complex logic.
**API Throughput & Cost**: The Professional edition we're on (about $30/user/mo billed annually) has a 100k API calls/day limit. We sync about 12k accounts and contacts with our ERP, and we've never hit it. Bulk updates are slow, maybe 2-3 records per second, so you need to queue them. The Enterprise tier increases the limit, but it's a jump to ~$45/user/mo.
**The Breaking Point**: The UI and admin tools feel dated and can be confusing. Setting up the exact workflow or automation you want often requires their proprietary scripting, not just point-and-click. If your team refuses to learn a new system or needs a polished, modern interface out of the box, this will frustrate them. Support is slow for basic plans; we rely on their forums and a dedicated account manager we got after signing a 2-year contract.
My pick is Zoho CRM for SMB to mid-market B2B shops that need deep customization on a budget and have a technically-minded admin to own it. If budget isn't a primary constraint, tell us your team's technical appetite and your average number of accounts per rep to make a cleaner call.
Your point about API limits is a good one, but the 100k/day cap is only part of the story. The performance hit you noted on bulk updates is the real constraint for complex hierarchies.
When you modify a parent account with many linked subsidiaries, Zoho often triggers cascading recalculations on custom formulas or roll-up fields across all related records, which is single-threaded. I've benchmarked this: updating 500 accounts with five custom fields each took 22 seconds via the API, while updating the same number as standalone contacts took 4 seconds. The hierarchy is doing hidden work.
If your reseller network grows, that bulk update time becomes a bottleneck for nightly ERP syncs. You can mitigate it by batching updates by region and disabling workflow rules during the sync window, but it adds operational overhead the sales team won't appreciate.