Okay, I am suppose to be working on a school paper and think I will avoid it and just keep posting instead
When I first started with Astrology I used whole house mainly because I did not know how to do the math (this was before, when computers had full refrigerated rooms and tapes) As learning was just from books the library happened to have, I didn't know much about planets in different placements to do comparisons.
At 20 I went to see an Astrologer (Kathy Neal) in Denver and had a reading. It was so completely off base, I felt bad saying over and over, that doesn't sound like me.... I went home and found I gave her an hour earlier birthtime than my own. So I went back and it was all on the money then... she used Koch.
As many do, I use different house systems for different types of Astrology. I use Placidus for natal, Regiomontanus for horary, and Whole when looking at Returns. It is best to decide which you will use based off of predictive Astrology, which gave the correct results for you.
Robert Hand was enthusiastic about Koch (that seems a good enough endorsement for me) and since has switched to using Whole House. I respect his work so may go ahead and start making both charts and see how that works.
I guess the biggest reason I cringe with using Whole house is that it puts my 12th house Sun in the first house spotlight. It immediately wanted to scuttlebug right back to the 12th and hide.