I like the blade to be angled back a bit. Imo it's more ergonomic. Especially when combined with a smiling edge. A true 'straight' razor is very un-ergonomic. There aren't too many flat surfaces on a human head.
As for the quantity... it doesn't spoil :)
And now that I am officially running a business, it's better to break even than to make a profit so I tend to order more than I need for the short term.