well i guess it's the end of the year and i've had some time to review my 2013 in metal....so in no particular order
Leucosis - Leucosis
Killer USBM with a depressing sound and plenty of post rock atmosphere. Awesome record and a good mix of atmosphere and traditional blast beats
Oathbreaker - Eros/Antaros
It took me a while to warm up to this, but the fantastic vocals and lo-fi feel won me over.
Gorguts - Coloured Sands
This may be my #1 this year. Amazing mix of styles and superbly well recorded for how brutal and technical it can be in spots. And beautiful...which for gorguts is saying something!
Cultes des Ghoules - Henbane
Scary, old school BM, with an occult tongue firmly in chanting cheek. They don't make it like this much anymore
Cult of Luna - Vertikal
Everyone should have heard this by now. Just gorgeous and very deep, great for quiet late night listening
Protest the Hero - Volition
Super well recorded uber-tech wankery, and the closest i get to enjoying "prog". Strong record from the young Canadians
Gris - A l'Ame Enflammee, l'Ame Constellee
this one has a beauty and delicate side that is impossible to resist. Sad stuff and constantly rewarding on further listens
The Dillinger Escape Plan - One of us is the Killer
A nod to the older math-metal origins of the band, with plenty of hooks and classic Dillinger wit.
Immolation - Kingdom of Conspiracy
Brutal tech death, done right. Rips from start to finish
Soulfly - Savages
This one surprised me, more brutal and death-oriented than anything from Max in the last decade +. Just plain fun
And of course the honorable mention, Ash Borer - Bloodlands. My favorite metal recording this year without question but only an EP so i won't count it :)
Looking back through there was actually a lot of strong recordings this year, including some surprises from some old school favorites and a good representation of all the genres, it would be easy to name another 10-15 metal albums this year that were outstanding for one reason or another