My top 10:
1. Marshall - all the tools, all the skills, near flawless record, plus near universal recognition as the best pacer of his time (mid to late 80s). Leading the greatest pace attack in history, he averaged 6 wickets a test at his peak!
2. McGrath - unbelievable consistency in a tough era for pacers. Perhaps the most intelligent pace bowler of all time in identifying weaknesses. Only loses out to Marshall for lack of pace which was an added asset for Marshall
3. Hadlee - A near complete bowler and tremendous matchwinner. The only possible blot on his record would be a sub-optimal performance in his only series in the West Indies at their peak. Very close between him and McGrath
4. Ambrose - No bowler was as capable of routine destruction as Ambrose from 90 - 94. Hardly ever bowled a poor ball, but compared to McGrath and Hadlee, Ambrose was a bit more one-dimensional and lacked their tactical intelligence, which meant his latter years he was not quite as penetrative.
5. Imran Khan - Imran achieved arguably the greatest peak of any pacer ever in the mid-80s. Mighty performances everywhere and especially against the West Indies. Would have ranked higher but his latter years as more of a part-time bowler weakened his record a bit.
6. Dale Steyn - A modern day wonder who produced matchwinning performances in virtually every series he played for his peak. However, compared to others, I felt Dale Steyn was more capable of off-color performances and being dominated.
7. Dennis Lillee - Great overall record but points taken away for being unproven in the subcontinent and West Indies, but deserves a high rank for universal peer recognition of his time.
8. Wasim Akram - In the 90s, he was recognized as the best pacer along with Ambrose, and his reputation has only grew with time. Perhaps the most skilled swing bowler of all but lacked penetration in his early and latter years which made his record suffer compared to others.
9. Allan Donald - Fast, deadly, but lacking in global impact performances, but the best bowler of the late 90s for sure.
10. Fred Trueman - England's greatest pacer ever.