Simaudio Moon 240i vs 250i vs 340i vs i5 vs All In One ACE?

Thank you @freediver 

I used i5 or 240i is in my budget, the 340i probably isn't.

So would you say the 240i is significantly better than the i5?

No,actually as I said,I felt the i5 was just a touch sweeter..Like changing from current production EL34 tubes to NOS Winged C or NOS Gold Lion tubes..NOTHING night & day but with SUPER resolving speakers, a slight highlighting of the midrange,like the sun going from a beautiful warmish yellow(240i) to a deeper redish/orange(i5) as it sets..
If the speakers are NOT really,REALLY good,I doubt any difference will ever be heard!
I also felt the build quality of the i5 was slightly better,just a small step up using all metal & aluminum in it’s build where the 240i has some plastic in it’s facia..You really can’t tell the 240i face is plastic unless you tap on it with a fingernail but it is there...Also note:used i5’s are VERY hard to find & priced at a premium nowdays as opposed to used 240i’s...

thanks @freediver there is one i5 on a-mart right now, that looks very good. I wish there was a dealer near me to audition it. 

Hello @grislybutter , per discussions with SimAudio and reading, the 300 class of integrated amplifiers have many advantages over the 200 series.  Not only more power, but their dual mono amplifier design will create quieter separation and better performance all around. In the Moon Reps words, "the amplifier section for the 340i outclasses a 200 series unit in every way".  The ACE is unique in that it houses an onboard MInd streamer (and DAC), making it a true All-in-One unit.

Thanks @fastfreight!

Is the ACE comparable to the 200 series?