Opinions on Parasound A21 & A21+

I have been informed that the sonics of both the older and new Parasound A21s are very similar.  I have never heard a Parasound product, let alone this model.  Forgetting for this moment system synergy, how good do you rate is this amplifier?  In basic sound character, is it a smooth operator with a non grainy, non fatiguing signature, that with proper systems matching will throw a 3d soundstage? Is it the entry-way to a high end, high power amplifier?  Please feel free to provide any down sides to this amplifier.  Last, what other amplifiers new or used in this $2,500-$3,100 price range would you consider?  I will mention that I generally hold onto my amplifiers for a long while so I prefer to buy new.

I have scoured and read many prior posts on this subject, but would just like some current opinions.  Thanks in advance.