I like that they have options for multiple font sizes so it is easy to customize what you want people to read! As far as I know, there are no downsides at this time but if someone has another suggestion please let me know. Try them out first before making any decisions because sometimes their prices change due to seasonal changes which makes things difficult when trying to plan ahead and budget accordingly. We use postalgamic letters (font) from different companies during events/seminars we host throughout the year. It helps us keep track of who RSVPed yes /no - and allows us to easily create customized thank-you notes after each event finishes.