In our SMB we went with Nutshell CRM [0]. The starter version has all the features minus sales automation. The UI is fine, they have well written docs [1] and their security docs is actually insightful [2]. Things like an well written API and an actual, live and up-to-date status page etc. make it look like a decent run SaaS business imho.

[0] - https://www.nutshell.com/pricing/ [1] - https://www.nutshell.com/security/