About a month ago I Sold my Jolida JD 100 after I bought a Cairn Fog with upsampler. Just last week I recieved a used Arcam FMJ CD 33.
Try to keep it short.
In my system the Cairn was better than the Jolida at capturing detail and timing. The Cairn also had sweeter highs and seemed smoother, easier to listen to than the Jolida.
The Arcam has a larger soundstage and more depth. Bolder bass lines and a more foward presentation than the Cairn. Also seems more detailed. Fantastic.
The Cairn however has sweeter highs, a better sence of timing and is even a bit smoother sounding. Very refined.. My wife likes it better than the Arcam.
Right now I can't make up my mind between the Cairn or the Arcam.
If you have speakers with agressive highs I would lean toward the Cairn because of its wonderful handling in this area , very sweet, smooth yet detailed.
If you need a little more bass impact want more depth and boldness and don't have an over agressive mid and treble ( or bad acoustics ) then maybe the Arcam is for you.