"Easy to maintain, fast, vibration issues on the hammers are now very rare."
i heard the earlier models (say 2004 and earlier) will vibrate at higher speeds no matter how tuned. have you found this to be the case too?
if you had to choose between a 2007 1,500hr B2 or a 1999 7,000hr B3 (both about mid-time on major components) which would you lean towards?