Guided versus customisable
This is the real choice. A guided system gets you live quickly and asks you to adapt to it. A customisable system adapts to you and asks for your time first. Judge it against your own tolerance for configuration, not against a feature list.
The size of business each assumes
Both are built for solo operators and small teams rather than large sales organisations. If you are heading towards several people handling enquiries with defined ownership and targets, check how each handles multiple users, permissions and shared inboxes before you outgrow it quietly.
Breadth versus depth
Client-flow platforms are deep on booking and delivery and lighter on the sales work that precedes it: chasing enquiries, calling, messaging, scoring and forecasting. If your bottleneck is converting enquiries rather than delivering bookings, that is worth noticing before you buy.
Implementation effort
Both are self-served, with no partner required. The variable is how much template and workflow building you take on. Owners who try to build the complete system before taking a booking usually stall; the ones who set up the enquiry-to-booking path first usually finish.
Channel coverage
Ask where each product expects the conversation to happen. If your enquiries begin in a direct message or on WhatsApp rather than in a form, a system built around email and forms will only ever hold half the story.