First off, popple, it isn't usually necessary to have the outlet built in like that. Normally, WCs come with the spigot sticking out at the back. Connection is then made using any of the many types of pan connectors available. A right-angled pan connector can point the outlet to anywhere you like.
If you decide against the Fresno, have a look at these..........
I use this Company a lot.
http://www.plumbworld.co.uk/contemporary-bathroom-suites-3672-0000
Experienced plumbers are well aware that some units are difficult to fix. They overcome it with a bit of thought and struggle. I wouldn't read too much into the reviews.