I just posted this under tech talk.
Just installed a GT-30, replacing an old GX500
I think the GT-30 works great. It did require an adapter plug kit from Concertone but it was plug and play. I see where other people are not fond of the Concertone (Genesis) brand but I have had no problems.
My 8 year old unit, the GX500, still works but the physical buttons are 'sticky' and the unit doesn't always respond. Using the remote the unit responds every time.
I just put the new GT-30 through a rigorous test by driving over the Denali Highway (I'm in Alaska). 125 mile of rough road and pot holes and the unit still works so I'm satisfied. We had a great camping trip
A few tips: 1. Use an optical audio cable from your TV to the Genesis and tell the TV to use external speakers, 2. The GX500 has a cable connection on the back and the Genesis 3 does not so you have to connect the antenna to the TV. 3. Use an HDMI cable.
Oh, and one more tip. The tabs on the trim piece break really easily so don't put the trim piece on the 3.0 until you are sure everything is working. I still haven't put mine on.