That is a good question for your builder. The best one for you is one he'll support.

You might want to add a solar blanket on a reel too. The help keep the heat in at night and when the pool is not being used. The also help keep the chlorine from dissipating.

Before incurring the expense of a solar system, try using the solar blanket. You my find that it is all you need.

Pentair's SunTouch Solar control system is one of the least expensive feature rich systems out there.

Try Heliocol, they have been around a long time.

All the black plastic collectors are about the same, Its the install and overall pressure in the system that determines life and longevity.

shoot for 1-1 or better sqaure feet of pool to panel coverage and get a good controller.

I have 12 aquatherm eco sun panels and In so california I can get temp rises near that of my master temp 400 on hot sunny days and its performance on overcast days is impressive.

With the automation system feeding the solar output to the heater I can get staggering heating performance in the 800K btu range.

Ill never have a pool without solar again.

Uncle Dave

You might want to peruse those approved by SRCC:

http://solar-rating.org/RATINGS/RATINGS.HTM

They give performance ratings. The PDF has glazed and unglazed and you'll want to look at the unglazed for your pool.

I'm sure that there are other good brands, but it's nice to know that an impartial organization has approved a certain panel.

I'm currently searching for the best option myself. Let us know what you decide.

Here is a link that might be useful: SRCC ratings page