Moved from Brighton to Horsham 5 months ago and absolutely love it. Mrs P took an age to convince me to leave Brighton after 36 years there but absolutely no regrets whatsoever.Horsham has been ruined by massive overdevelopment. My late Father in Law was a HDC Councillor involved in Planning and always told me that they would fight tooth & nail to stop 'Crawsham'. Sadly Les died a long time ago but I have no doubt he would be appalled at the state of Horsham now.
If you want my opinion then anywhere along the East-West line of Henfield, Steyning, Storrington, Petworth and Midhurst still worth a punt.