Sound — 10
I use a Cort guitar and a Peavey Predator with it and it sounds great. I play heavy stuff like Slayer, Avenged Sevenfold, and Trivium and it sounds great (for the above, I suggest using channel 25). It's 15 watts of power is pretty loud. I don't use it for band practices, but for jamming with my friends. The many different channels of distortion range from just overdrive to very brutal distortion. My pickups suck, so I do get a tiny bit of feedback though.
Overall Impression — 9
FOr the third time, I play heavy stuff like Slayer, Trivium, Avenged Sevenfold and it sounds great. I've been playing awhile now and the only other guitar amp I own is a Spider II 112 and a Roland Cube 15. For features, it beats both, and for power, it beats the Cube 15. The Spider is more powerful though. I love the brutal distortion for my heavy metal. I someone stole it, I'd buy it again, or go on a secret mission with an M16 and a pair of night vision goggles and find the man that stole my amp.
Reliability & Durability — 7
I wouldn't trust it to be loud enough at a gig, but at jam sessions with friends, who don't have much bigger amps, it works well. It doesn't have a metal grill like my bass amp so I wouldn't throw spears at the front or anything but it is pretty reliable. It has never broken down and I've had it awhile now, so I do trust it.
Features — 10
This amp features too much too speak of, but to start off, it has 50 different preset channels. There are sounds for most types of metal, hardcore, punk, blues, jazz, mainstream rock, reggae, pretty much everything. It has many effects and you have the ability to shape your own custom sound and then save it. The Fender G-DEC features drum and bass loops with basic drum patterns from a Led Zepplin song, Run to the Hills, double bass kick, surf music and many more. FOr the drum loops you can even change the tempo! G-DEC has an extra guitar input so two people can use it at once, helpful for harmonized guitar parts. It has a headphone jack and a CD input so can jam with your CDs. The Fender G-DEC has 15 watts of power.