Ok, guys...I've been using Echo blowers now since I started my company in 1988 and love them. Currently I'm using Echo PB-403T's and I need to purchase another blower. The model #'s have changed over the years and I'm wondering do I stick with the 403T's or go for more power like the PB-620 or PB-755? I'd also consider Sthil or Shindiawa but prefer to stick w/ the Echo....recommendations welcomed! Charles Murray Health Turf Management Inc "Health-care For Your Lawn"