To understand the benefits and features of Aqua compared to IntelliJ IDEA (both CE and Enterprise), the best resource would be the official JetBrains Aqua homepage. JetBrains provides detailed information on Aqua, including its unique features, advantages, and how it stands out from other IDEs like IntelliJ IDEA. You can explore this information and make a comprehensive comparison by visiting their website at JetBrains Aqua.

On their website, you'll find a breakdown of Aqua's capabilities, user interface details, integrations, and any specialized tools it offers that might not be present in IntelliJ IDEA. This direct comparison from the source will give you the most accurate and current insights into choosing the right IDE for your needs.