What does "Prototypes that actually look good!" mean?
The thing about prototypes is that if they "look too good" the people who see it forget it's a prototype. Then you get bogged down in details like "why is that button so orange?!?" every time you show it off.
That's why low-fi prototyping tools like Balsamiq are so good... they help you create things that look like prototypes.
There is a point to "Prototypes that actually look good!". If your client does not like the orange button then you have to change it anyway, so better sooner than later.
Anyway I liked them because it's very easy to create and share prototypes.
By the way you can create wireframes if you want to avoid that kind of comments.
The thing about prototypes is that if they "look too good" the people who see it forget it's a prototype. Then you get bogged down in details like "why is that button so orange?!?" every time you show it off.
That's why low-fi prototyping tools like Balsamiq are so good... they help you create things that look like prototypes.