Bristlenose are the best pleco for that specific task, though you'll still have to supplement the algae with things like pleco wafers or zucchini. They also love a piece of driftwood to chew on. Bristlenose can also get lazy as they get older and stop cleaning surface algae, so you may have to rotate them out for younger ones every year or two.
I've found that common sailfin plecos don't do much in the way of algae control once they put on some size, and they put on size QUICKLY. I also have a rhino pleco (aka chocolate pleco, Pterygoplichthys scrophus) that did amazing work when he was about 2 - 3", but now he's 11" and all he eats is pellets and slime off driftwood.
Nerite snails are great cleaners but they leave thousands of calcified eggs on everything and a lot of CA cichlids will eat them right out of their shells. I had a dozen in a 55 gallon with some rainbow cichlids and they ate the snails within a matter of days.
