The lfs in my town is pretty poor in pretty much every area of fish keeping, whenever i go there i always see many sick or dying fish, a pretty poor selection of fish and plants, tiny tanks with nothing above 40gals ever being offered, terrible ("bad" doesn't even describe the advise, they could not tell the difference between a male guppy and a female guppy, one of the most commonly sold fish in the hobby, and if you mention the phrase "cycling tanks" and all you get is a blank face staring at you) advise from staff.
The guy there who owns it really doesn't seem to give a cr*p about the way the place is run or what happens, he keeps on going on about selling it, although he's been saying that for over half a year now.
My other lfs called WaterMarque in a town very near me (Yeovil) is far better- as far as i know, its pretty good as far as lfs go in general. They have an excellent selection of fish, everytime i go there i always see a species of fish i've never seen before or a new color variation of a livebearer of some sort.
Sometimes they do have tanks of sick fish, but the vast majority of their fish tend to be very healthy (they've got about 60-70 tanks not including display ones)- they sell marine, brackish, freshwater, coldwater, sub-tropical and tropical fish as well as other critters like turtles and lobsters/crayfish, frogs etc.
Their staff, although not amazingly educated about fish keeping or anything, have offered good accurate and true advise in the past though (although like any situation, i still firmly believe you should do your own research before hand) and they do seem to make an effort to look after all animals very well there (as the place doesn't just sell fish, they do all kinds of exotic and everyday pets too).
Practically everything that decorates my tanks has come from Watermarque, its a really good place to find those extra large peices of drift/bogwood and mopani wood, they also sell tanks up to 6ft long and will get larger tanks if specifically asked for.
They also sell a huge amount of L.no plecs and rare cories too, as well as pond fish and pond supplies.