Was on the other thread in regards to ball spinner torque, but I'd like some opinions on the Donkee. 
I have read both good and bad, but mostly bad in regards to the vibration.  Is it really that bad or is is exaggerated?  How's the quality?  I know most will say go to Vertex or Innovate or Jayhawk, but the Jayhawk is really expensive, and the shipping cost on the Innovate is $100.  Vertex never responded to my inquiry about shipping.  Donkee quoted me about half the cost of shipping than Innovate. 

My vertex 1/2 is great.

I use more polished equipment than non-polished.

I did contact Donkee and they said that they have been having wobbling complaints, but it was on spinners that were older than 7 years. The current owners bought Donkee 7 years ago and did a rebuild on the machine to eliminate the wobbling and have not been having this issue.
Anyone with a newer model Donkee can chime in? 

I'm still weighing my options, kinda want the 2 speed, but the Other brand 2 speed models are way more expensive (then the crazy shipping cost added on!). 

dmonroe, how old is your Donkee?

So with the switch, you can't just start it on low speed, but switch it from high to low?  Is this normal or a problem with your switch? 

It does say on the Donkee site to routinely tighten the pulley, is this hard to do?  Meaning, do you have to remove this and that to get to the pulley to tighten, or is it just loosen a nut, pull, and tighten?  Do you have to do this with the  Innovate and Vertex as well? 

dmonroe, how old is your Donkee?

So with the switch, you can't just start it on low speed, but switch it from high to low?  Is this normal or a problem with your switch? 

It does say on the Donkee site to routinely tighten the pulley, is this hard to do?  Meaning, do you have to remove this and that to get to the pulley to tighten, or is it just loosen a nut, pull, and tighten?  Do you have to do this with the  Innovate and Vertex as well?

As far as problems, I suspect the Donkee is going to similar to any other spinner. Some will be problem free (like mine for 14 years), and others will have minor glitches. Spinners in general aren't mechanically complex devices, so it shouldn't be a major concern. What's important is if the company stands behind it. 

Thanks for all of your comments!  Getting a ton of great input and would love to hear more. 

Here's the thing.  Innovative now owns Vertex.  Vertex makes a good low end spinner.  My least favorite thing is putting too much pressure slows it down.  Donkee didn't slow down when you put pressure on it.  However, the feet being really thick rubber squishes as the weight block shifts making the whole spinner shake and vibrate.  The plastic also isn't strong enough for the weight block, so it too bends enough to make it shake.  The best way to handle a Donkee is to get a rubber mat to absorb the shaking.  Bolting it down doesn't do any good.  I've tried bolting them down, and it doesn't work.  I'd recommend operating Donkee's on a cement floor again with a rubber matt underneath.

Vertex is rock solid when it comes to not shaking.  It's only as good as what you put it on though.  If you put a Vertex on a table that really shakes, then it will not matter.  I have a super heavy duty work bench for $150, and there's no wobble.

Innovatives are the most rock solid on the market and won't slow down no matter how much pressure you apply.

All in all, Vertex is probably the best bang for your buck.  If you don't care that much about money then go with Innovative.

Here's the thing.  Innovative now owns Vertex.  Vertex makes a good low end spinner.  My least favorite thing is putting too much pressure slows it down. ....

I have a 1/3 hp Vertex. I cannot understand your being able to slow it down. The torque on mine is enough that I cannot slow it down; I am 6', 240 lbs. I am not weak.