Magnepan 3.7's versus 20.1's?

That made no sense. Are you saying you think the 3.7 is better, or you can't afford the 20.1 so you bought the 3.7?

There is no comparison. The 20.1 is a much, much better speaker. A used 20.1 in perfect shape, is a much better deal than a new 3.7.

Here we go.

Before we digress, I suggest

Magnepan 3.7's versus 20.1's versus Tympani IVa's

please.

I would think the 3.7s will be a distant third to both.

Both require a lot of power, 300wpc to start, of quality power unless dynamics do not matter or your room is small, a hardwood floor etc. The 3.7 is a big slice of the 20.1, but not the whole pie. Close enough though that a well set up 3.6 ,3.7 will outperform a poorly set up 20.1.

Thanks for your input folks. I have sufficent amplification & a suitable sized room - & was leaning towards purchasing a pair of 20.1s. I just haven't had the chance to compare them to the 3.7s & wondered whether the 3.7s were as close in performance as some people seem to be suggesting.