Has anyone tried the cheap Greenwood 4 gallon backpack sprayer?
 

Last year I bought 4 Chapman 1 gallon sprayers. They work fine but i half to stop every 10 mins it seems to refill them.

Anyway I was thinking of buying a backpack sprayer. I found this one from Greenwood with some pretty good reviews for $19.99. I figured it might be worth a try.

[url]http://www.harborfreight.com/4-gal-backpack-sprayer-61368.html[/url]

Has anyone fell victim to one of these or maybe even a positive review?

Thanks
Bill