Both markers are fantastic, most people who have the speed long for an A4, but settle for the speed. Your choice mate, if you're the type of person who likes all singing all dancing gizmos, then it's the A4. But if you're the type who prefers value for money, then the speed is for you. Performance wise there's not much between them, so it's more about bling.
Enjoy the angel experience, remember, great backup, and a forward thinking company, who in 3-4 years have developed the angel into a special marker indeed.
It's taken 15 years to get the cocker where it is, and it still has the guts outside (wake up guys).