I have an 18V Ryobi leaf blower. It works well. I think I got it for ~99. They had another that was $169 that was also 18V but had much higher CFM which might have been nice.
You would probably be good to get a Dewalt if you want to stick with the same battery/charger.
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If you've got some Dewalt 18V stuff, then you're screwed. All of the Dewalt blowers that I see on the HD website are either "20V Max" or 60V. So your existing batteries probably won't work. If that's the case, then the best that you can hope for is that your stuff will be the same color.

That actually might be a pain if they are a similar shape.
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Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa

SOLD 2004 - gone but not forgotten