Consider wether you want a 'through draft' or 'cross draft' model.
An over simplified explaination is that through drafts are cheaper, cross drafts are better.
Cross drafts typically have square trays and are configured a bit like a low temp fan forced oven. They can do fruit leathers, youghurt and other 'runny' stuff. No need to swap tray positions around during use.
Through drafts tend to have round, stackable trays. Harder to load than square trays, need to swap tray positions during drying to get an even result.
For my (possibly confirmation biased) $0.02 worth I went with the "Sodona" and am very happy with it.
Friends who have borrowed it have since bought their own. There is no way I would willingly go back to off the shelf freeze dried food rather than home made and dehydrated meals.
As for meals... Mostly curries... Penang, Rendang, Massaman etc
Also lots of fruit, in particular home grown bananas and fruit that is not normally sold dried (strawberries, kiwi fruit). Home made muesili bars.
For rehydration (of curries), I use a jet boil, boil the water, cut open plastic bag with meal in it, pour hot water into bag, place bag into jetboil with a little bit of hot water, put lid on. Leave it like this for a while while you set up camp etc and every now and then just fire up jet boil and add a bit more heat. Essentially the meal gets soaked in hot water for half an hour or so, this could be quicker but I prefer to give it plenty of time to rehydrate.
Pour meal from bag into bowl, enjoy!
Btw, this method leaves teh jetboil clean as the food never touches it. Remaining water can be reheated for a cuppa with dinner.
Hope this helps...
