The best test of a brand name is to talk to an expert. We know what problems to look for. Your acquaintances, well meaning though they are, don't. Meanwhile, online resources aren't human or aren't dealing with your individual case.

A 15-minute conversation with someone who thinks about brand names all day long 365 days per year is your "quick and cheap way to test".

Give me a call. Although I do offer naming as a service, I won't steer you toward a rebrand unless you need one. For many of my Clarity.fm callers, I simply evaluate the names they bring to the table, discussing the pros and cons or giving them a green light if everything's good to go. In terms of rebranding, I can often sketch a broad outline; and you might try filling it in on your own.