I've set up my first signature via mysignature this afternoon (Apple Mac / Safari / iCloud Mail).

PROs:
- Really easy to create a signature you'll be happy with, using the templates (check out the video on the product page about how to use it - it's helpful)
- Excellent, speedy - and patient - customer support (shoutout to 'Marta' and 'Tanya')

CONs:
- if you're using Apple Mac / Safari / iCloud Mail you. might find it a little fiddly to get your signature correctly formatted. I ended up downloading Chrome and Firefox. Long story short: the getaround seems to be to copy the preview URL into a non-Safari browser, then use the clipboard from THAT browser to insert into iCloud Mail.

Overall, it took me longer than I would have liked, BUT, next time will be far quicker, and for the LTD price and with responsive Customer Service for someone who isn't an expert, this is a great deal.