Lovely to hear from you again It's me. Well done to your DD, you must be so proud.
We too have no regrets about appealing last year even though it was stressful at times. We however were not sucessful in our appeal as the panel did not recognise the evidence supplied of DDs academic ability (she did not pass on the day) which makes me smile as she just achieved a level 7 on her latest maths test and is pretty much a 6a for everything else. We had a similar experience of gushing at her parents evening and luckily for us she loves her school and is doing really well even though it is not a Grammar.
Its a shame the 11+ focuses on just one days performance but win or lose I feel that appealing is of benefit (where else can you boast of their achievements without it being seen as bragging and demostrate such faith in your DC ability) so best of luck to all going through the process.