Just my opinion - I had miniatures...
I did not find any genetic issues in the miniatures that you see in other miniature animals...they just seemed to be smaller. But with any down sized critter (or enlarged like a mammouth (sp?)...), I try to be sure there was not a genetic reason for the size issue (Like, dwarfs in mini horses).
Cost to buy - standard are CHEAP right now. Color has a factor in cost. Also training.... "Guard" standard donks cost next to nothing - or are even free around here. The minis still have "value"....but I haven't looked at prices recently.
Cost of care - I would say it is equal...hoof care, vet, feed, meds would be about the same or equal. I don't think that would be a factor.
Many standards, seem to get less handling (around here lots of guard field donks), and some of the minis I have met are sometimes overly spoiled....neither is good for a donk IMO...so that would be a consideration for me for sure.
The main thing I have seen - bloodlines and color (reds are really desired...TRUE blacks with no cross, creams and spotted are easier to sell and more costly to buy.)
Miniature horses and donks can be a size that is in danger from a kick from a big horse (head in danger of a kick)...not sure of the size of your gelding, but maybe a standard would be a better size match.
If I bought again...attitude would be most critical for me....one that trusts people.
Hope that helps some....
Love is a visible gift of God like when you see Peter-John's and Darlin's souls touch
Last edited by Peter-John's Love; 02-10-2009 at 09:32 AM.