i moved to alloa in 2007 from stirling and i think its a good place to live (you get used to the jokes about trolls at the gates to middle earth etc)
tullibody has some nice bits too and some not so nice bits (dont know the area name specifically but its towards the alloa side on the left hand side)- been up the woods at the back of there and its like beirut.
Alloa itself has good and bad bits, we're in the good bit (naturally) at the north end of town. avoid the area known as the bottom end / mar policies as thats where some of the bams live apparently. The only thing with tullibody is that it doesn't have much of a high street and its not really a destination as such. Alloa itself isn't exactly a metropolis but it has a reasonably busy high street and a good butchers and a few pubs that you can leave without going out in a body bag.
The other big plus for alloa is the rail station with regular trains to glasgow / edinburgh (takes about an hour to each from alloa)
Lots of good riding from the doorstep and central enough for places like carron valley, fife and the lothians. Also just 2 hours short of fort william / the highlands for superb riding.
all in all a reasonable spot to bide!