I have experience selecting and integrating a range of CRM solutions across a variety of industries. Pretty doesn't necessarily correlate to effective buy I know what you mean: Form IS a part of Function. That aside, there are five metrics I follow when considering a CRM application for general use:
1. Organic Fit - To what extent does its underlying methodology fit your existing process. Will it integrate with your other systems (e.g. Accounting, HR, etc)
2. Market Penetration - If it's widely adopted, others are finding it useful and it's likely well-supported. But there is a reason it isn't #1 on my list: it needs to fit your operation.
3. Quality of Support - Near zero downtime, rapid response to user issues.
4. Scalability - Today's need will not be tomorrow's. What is the existing ceiling? What happens when you blow through it?
5. Cost of Use - Services are not the only things that scale. Write this into your game plan.

The top six examples (in no particular order) would include: Salesforce, Hubspot, Microsoft Dynamics 365, Zoho CRM, Pipedrive and Sugar CRM. Let's arrange a call if you would like me to provide rankings based on above five factors.