I am going to go out on a limb and say, just talk to as many RL people whose children have gone to different unis and on different courses to get a bit of a feel for what happened next and outcomes over three/four years. And you will learn even more than you do during the Open Days which after all are about spin.
I've known people enjoy Winchester, Falmouth, Bournemouth, Hull, Edinburgh Napier, Manchester Met, LCC, and Ox Brookes, as well as Leeds, Manchester, Edinburgh, Oxford, Cambridge, Glasgow, Nottingham, Warwick Exeter. And some of the RG ones were NOT a success, my friends children did not actually like them and moved or endured a year before coping a bit better. The Open Day was but a tiny flavour of what being there was actually like..too druggy, too lively, too boring, too sedate, too small, too large, too difficult, too easy... But when you talk to individuals and you have a sense of what sort of character that individual was, then perhaps it is easier to make a good fit for your child on that course and at that location.