Hi there! I also applied to Reading and Exeter (for politics) and got offers from both. AAA from Exeter and ABB from Reading.
Exeter is a beautiful city (but feels like a big town) and the university has a great campus as well. The sport there is great as is the social life.
Depending on where you live, it is a long journey from the South East, Midlands or North - but this irrelevant if travelling or being far from home don't rate highly for you.
Accomodation at Exeter is varied but the whole campus/city is built into a large hill so be prepared for some steep walking and powerful legs by the time you've finished studying!
Reading, for me, was just as nice. I liked both campuses almost equally but the main forum at Exeter was very impressive and modern.
The accomodation at Reading is modern and current and the campus is well spaced and very green.
In terms of catering, Exeter has a clear distinction between self and catered packages. Your halls tend to have dining halls within them where catered meals are served. At Reading, you get a pre-loaded campus card with money to spend at any of the eateries on campus, so Exeter is very much traditional in this area.
Both universities have their merits. Exeter rates highly on the league tables and Reading rates highly with research and course tailoring (choosing your modules and what to study).
Both rate highly for student satisfaction.
In the end, your decision should come down to which university has the best course for you and the better option for your living needs and costs.
It was very difficult for me to choose between these universities. I chose Reading in the end for the fact I can tailor my course, it's close to London, closer to home too and I preferred the accomodation there. That and the grades are lower. Having said that, had Exeter offered me AAB, I possibly would have firmed that one.
Sorry for the exceptionally long post, but hopefully this helps. Just ask if you have more questions. My boyfriend did his first degree at Exeter (History) so I know a little more about life there as well (he absolutely loved it).