I used to live halfway between Sabetha Kansas where Hydrabeds are made and Anthony Kansas where Dew Ezes are made. I have a good friend that would go to nut frys and when everyone got in the beer pretty good start a haybed "discussion" just to laugh at the ensuing war.
My experiance:
Hydrabeds are simpler - the controls are pto cables not switches. the switches always fail at the wrong time I've seen more than a few hotwired Dew Ezees
Hydrabeds are faster - the pivots open simultaneously, not one at a time
Hydrabeds can pick up bales close togather like if you have bale rows too close togather, Dew Ezees can be hard on bale rows next to the bale you're picking up
Hydrabed only uses a 15 gallon pump - on a DewEzee its the big option
Hydrabeds have a better float feature if you are unrolling a bale
Dew Ezees are more operator friendly. especially with the new wireless controlls
Dew Ezees are heavier, but my hydrabed is on its fourth pickup.
Dew Ezees cost about a grand more
Hydrabed - tripple C Mfg is really supportive of their equipment - don't know about Dew Ezee
Final note, get a pump driven off the front of the motor - those starter motor deals are lame with modern balers making such big bales
oh yeah, if you are going to use your bed hard, you need a heavy frame 1 ton no floppy axle ford or torsion bar Chev