Deep? Not really. Challening? Oh yeah.
I've had mine for a year now, I'm not sure I'll ever let it go. I am probably just biased, but I think mine is one of the finest in the area. I paid $3k for it fully shopped. I saw one at Pinfest for 4k which I found funny.
The legs on my machine are 20 years old, and they should last another few decades.