Looks is a matter of opinion but IMO the Unico is a better looking machine. It also comes down to trying the machines out and seeing which feels better. I havent tried either but it goes without saying that either will be a huge improvement over the Krups.
If youve been lurking for a while then you should know that the grinder is probably the most important factor. You can make a better shot with an good grinder + average machine than the other way around. If youve got the budget to get prosumer grinder AND espresso machine then the only other recommendation is to book yourselves into a home barista course