Places that are nice:
1. Prestwick
2. Alloway
3. Doonfoot
4. Troon
5. Symington(some parts)
6. Basically most of South Ayrshire apart from a few ahem 'rural areas'
7. Newton Mearns(25 mins away)
8. Eaglesham(25 mins away)
Places not so nice
1. East Ayrshire
2. North Ayrshire
3. Paisley
Also if anybody suggests to you the towns of Irvine, Kilwinning, Saltcoats, Addrossan, Cumnock, Drongan and last but certainly not least the hell hole that is Kilmarnock, decline and then kill the person who suggested it to you.
I do have a strong bias for South Ayrshire having lived in Prestwick for nearly all of my 26 years, although living in deepest darkest Surrey this last year has probably given me rose tinted spectacles of the place