Should I buy used Challenger?

[george8585]

George it would do a better job than a 13 inch rotary in my opinion and maybe a bit easier to get around in small rooms than the orbot, but wheels off the floor makes it a little more difficult to run than the orbot and slower. I guess it just depends how cheap you can get it. Challenger is bullet proof, I will say that. I bought a used one about 12 years ago and it's still running strong.

The Challenger is slower than a Orbot. I think the Orbot is slow.