Your preferred SP big bale stacker?

I was having a discussion with my brother and the topic of big bale stackers came up.

 

What is your preferred brand of self propelled stacker, and why? I have heard that the Stinger is very heavy, maybe to heavy for some soil types?

 

What kind of options does your stacker allow you? Can you pick 3x3, 3x4, and 4x4 bales? Can your machine pick rounds also?

 

On a separate note, I was reading another thread, here on HT, and custom rates were discussed. What are the rates in your area for big squares of each size?

 

Thanks.

Your preferred SP big bale stacker?