I have one dalmation molly. She's an attractive fish and I'd certainly recommend them if you had the right sort of tank set-up. Not particularly difficult to care for, but apparently the lyre-tails are more delicate.
I had a dalmatian molly, and I loved her to death. She had lots of personality, and was friendly and beautiful. She also had a couple "litters" during her lifetime
She died recently of popeye, but she was a great fish. By all means - Get one!