There are hundreds of solar manufacturers, and dozens of models from each company, so choosing the right panel can be a daunting task.
Where do you begin?
1. Look at the warranty
2. Look at reviews from other users
3. Look at the overall reputation from the manufacturer
At the end of the day, the panels are usually pretty much chosen by your solar installer, since they will have a preference (and often negotiated prices) with their chosen manufacturer.