Katy - try to think of house systems in conceptual terms. I know that you and I use different techniques, but that's not so important, and you're a good astrologer.
For me, for instance, I tend to look at things like triplicity lords in both quadrant and whole sign houses, because the nuances are slightly different. Unlike a lot of traditional astrologers, I do use quadrant houses as a base, but whole sign has its uses, too. Sometimes it gives you that 'a-ha' moment that brings things together.
It's not so much 'one right way', more - a different view of the same thing, turning the picture just a little bit. It's still the same picture, though.