I have never heard that Heart track. By the sounds of it, Tom and Alex didn't playing anything on this track.
If this is the only new thing on this, I don't need it. None of their albums really suffer from any production issues to me, bar maybe New Religion so I can't see what they can offer here.
EDIT: 4 new songs, including this one. Only has songs from New Religion forward. Talk about a cash grab from Frontiers!
Best Of Fear" track listing:
CD1
01. Area 16 (new song)
02. Predator (new song)
03. If Looks Could Kill (new song)
04. Thrill Of Speed (new song)
05. The End Is Near
06. Strike
07. Sign Of Fear
08. In Metal We Trust
09. When Death Comes Knocking
10. Six Times Dead
11. Angels Of Mercy
12. Unbreakable
13. Riding The Eagle
14. Rulebreaker
15. King For A Day
16. Bad Guys Wear Black
CD2
01. Every Time It Rains (feat. Simone Simons)
02. We Walk Without Fear
03. Fighting The Darkness (long version)
04. Hands Of Time
05. One Night In December
06. The Sky Is Burning
07. Where Angels Die
08. Black Rain
09. Born With A Broken Heart (feat. Liv Kristine) (remix)
10. Born Again
11. The Man (That I Don't Know)
https://www.blabbermouth.net/news/primal-fear-to-release-best-of-fear-collection-featuring-four-new-songs/