experiment; Algae eaters arrangement point to point

I need to control the algae bloom that occurs in my Fish tank. When the algae bloom, it alters the PH balance and is very damaging to fish kept in an aquarium. I already have one of the best filter systems and still the algae grow out of control at times. I need help with this issue. There are fresh water fish in the fish hobbyist community known as algae eaters. I have narrowed my research to two algae eaters, the Chinese algae eater and the Plecotomus Fish from South America.
The algae eater Fish needs to be affordable, an addition to my Fish tank, and Get along with all six Angelfish. Live in water temperatures of 78-82 degrees Fahrenheit, and not make a mess in the tank or destroy the vegetation already living in the aquarium. I have set up a point by point arrangement to help me select the best algae eater for my tank.

The Chinese algae eater
Price
Size
Life Span
Characteristic
Tank Mates
Temp. Range
Waste
$2 - $8
11in. - 1ft
3– 5years
Docile as a juvenile /territorial as it mature
A poor tank mate for any fish
60–90 degrees Fahrenheit

fair

Plecotomus Fish
Price
Size
Life Span
Characteristic
Tank Mates
Temp. Range
Waste
$1- $10
20in. – 2ft
7–10 years shy as a juvenile/peaceful with appropriate space ideal community Fish with Fish around the same size
72–86 degrees Fahrenheit produce lots of waste

In conclusion the research I conducted is for the experience Fish hobbyist. I now have a better understanding of both species of fresh water algae eating fish. Both Fish are very well known for their purpose, and recommended. Taking in consideration the affordability, if it is going to get along with the rest of the fish already living in the Fish tank, and the living conditions I will go with the Plecotomus Fish. Even though both Fish show great adoptability in a large temperature range, what helped me decide on the Plecotomus over the Chinese algae eater was the aggression the Chinese algae eater gains with