Why do you ask?
(Hint: it's nice to provide more details in a post like yours, e.g. what you are looking for in a speaker, why those particular models have caught your attention etc).
Not all of these speakers have the same bass extension, and the average listener will tend to prefer the bassier speaker since 30-35 percent of psychoacoustic weighting tends to be based on bass performance.
I heard the Confidence 20 at RMAF--demoed it for about 30 mins when the show was over. I listened to the JA Pulsar and TAD ME-1 at dealer locations. My order of preference is TAD ME-1, Pulsar, Confidence 20, in that order.
The TAD ME-1 has the most uniform dispersion, TAD’s stuff is all derivative of Harman’s research as Andrew Jones used to be a Floyd Toole disciple, and will be closest measuring to the ideal Harman Spinorama curve. It’s a lean sounding speaker and needs a subwoofer to fill in the bass, or you don’t have high output requirements you could try boosting the lower range with REW or Dirac Live.
The Pulsar is a good speaker, and it’s a good design choice for off the shelf drivers. If you don’t have the tools to fashion your own waveguide to match directivity at the crossover region, the next best thing is to pair a tweeter with a driver under 6", that way you reduce the effect of tweeter bloom beyond the crossover point. The Seas millennium tweeter is somewhat directional above 5.5k though, so the on-axis is a bit overly airy, and the off-axis sound is a bit overly mellow in comparison. With these speakers, you can play with toe-in to adjust treble tonality. My personal preference is for more uniform dispersion in the highs (i.e., the Harman ideal), like with the SB Acoustics TW29BN tweeter, so placement isn’t as important.
The Dynaudio Confidence 20 during my demo had similar tonal qualities to the C1--very extended and bassy, but had the same imaging issues. No waveguide and an excessively large bass driver means exactly what you would expect--dispersion that varies noticeably by angle and while the speaker sounded great in the nearfield with the speakers pointed right at you, small shifts did change the tonality somewhat and I'm reticent to drop big money ($10k+?) on something that didn’t at least get the polar response right, especially when there are very inexpensive ($500 or less) speakers that can pull it off.
Thank you gyoungblood. Your experience is helpful to know. I heard the pulsars, although they sounded good, but didn't wow me enough to open my wallet. I don't have dealers near by where i can audition the TADs, it looks like most everyone who heard it like them a lot. I am going to try Confidence 20s soon. Love the new look and the bottom port is interesting design.
You can also consider the KEF Reference 1. When I demoed the TAD ME-1 at a dealer they also had the Reference 1 which we put them head to head in a 2 hour or so demo, I went there with 2 other friends. We all agreed the TAD was a little more detailed but somewhat more fatiguing too, possibly due to the slight wiggle/rise at 1K, but the Reference 1 was a lot more tonally pleasing with the much deeper bass extension, and also it’s slightly rolled off treble extension was more conducive to long listening sessions. We all ended up preferring the KEF Reference 1 by a small margin. Maybe if the TAD had a sub it would've done a little better, but for pure 2-channel I think the Ref 1 has it by a hair.