I still have a lot more listening to do before I could make any decisions but these are the 2013 releases that I've listened to the most and have trouble leaving my CD player.
Enforcer - Death By Fire
Borrowed Time - S/T
Horisont - Time Warriors
Voltax - Hiding Into Flames
Helloween - Straight Out Of Hell
Gamma Ray - Master of Confusion EP
Satan - Life Sentence
Procession - To Reap The Heavens Apart
Here's my updated list of MY top 10 2013 releases:
1. Helloween - Straight Out of Hell (if you remove "Hold Me In Your Arms" and "Asshole")
2. Borrowed Time - S/T
3. Atlantean Kodex - The White Goddess
4. Horisont - Time Warriors
5. Satan - Life Sentence
6. Gamma Ray - Skeletons and Majesties Live CD/DVD
7. Enforcer - Death By Fire
8. Voltax - Hiding Into Flames
9. Gamma Ray - Master of Confusion EP
10. Screamer - Phoenix
These are 2013 releases I still need more time to listen to that my first impression was very positive but I don't think they would crack into the top 10.
Nocturnal - S/T
Beast - Dead or Alive
Argus - Beyond The Martyrs
Watain - The Wild Hunt
Hell - Curse and Chapter
Paradox - Tales of the Weird
Hibria - Silent Revenge
Avatarium - S/T
Noctum - Final Sacrifice
Church of Misery - Thy Kingdom Scum
Battle Ram - Long Live the Ram
Procession - To Reap Apart the Heavens