The only RF worth mentioning with Eclipse is the one Denon made for them, which is out of production...
A watt is a watt no matter what brand it comes from, however not all brands output their claimed wattage. Assuming EQ'* and loudness are off, all decks will sound the same. Choose based on the features you need and want.
I'd say for the average person, stick with Alpine and Clarion, unless u find a great deal, or have a specific need or look. Both brands are full featured, top notch setups, Eclipse is similar, but has stuff like 8v pre-outs standard etc.
'06 Vee Dub GTI 2 door Tornado Red
- 2.0 Turbocharged, Intercooled, Direct Injected, 6 Speed DSG, Underbody Aero, 17" Classix
- Moonroof, Bi-Xenon headlamps, Interlagos Plaid Sport Seats, 6 Disc In-dash, iPod integration, GTI Monster Mats (winter)
'93 Bonneville SE Purple Pearl H4U package - picked up June 23, 2003, Traded-in June 28, 2007...