What sits at the centre of the record
A relationship CRM organises around people and context; a sales CRM organises around opportunities and stages. Both hold contacts and deals, but the emphasis determines which questions are easy to answer and which take work.
Team size each assumes
Relationship tools work well for individuals and small groups with their own networks. Sales CRMs assume shared ownership, handovers and manager oversight. If you are moving from founder-led selling to a team, that shift matters more than any single feature.
Breadth versus depth
Depth in enrichment and context, or depth in pipeline and outbound execution. Few small-business tools are equally strong at both, and buying for the half you use less is the common regret in this comparison.
Implementation effort
Low for the software, higher for the data. Relationship businesses usually hold years of scattered contacts, and merging them properly is the project. Do it once, carefully, before the CRM inherits the mess.
Channel coverage
Ask both where calls and messaging land. Relationships are maintained through informal contact, and in many markets that is WhatsApp rather than email. A CRM that cannot hold those exchanges will always show a thinner history than the one your team actually has.