Hello, would definitely recommend Jayce. He's one of the oldest sig designers and has provided me numerous signatures.
You can find his thread here -
https://bitcointalk.org/index.php?topic=1142066.0He's fast and efficient, and his prices are actually cheaper/equal to other designers, even though his work is better.
Unyil is also a pretty good signature designer, although I think he's inactive now. He's the cheaper one of the 2.