I made a significant change to my astrology practice a couple months ago: I switched to whole signs. Prior to that, I was using Polich-Page (which is more or less identical to Placidus, the most popular Western astrology house system and typically the default on any website that generates charts). However, I read some compelling arguments that convinced me to make the switch.
It started with this article by Michelle at AstroFix, who attended a lecture by Demetra George about the topic. To be honest, Michelle’s article alone was enough. Reading this was an epiphany… it changed my whole perspective!
Also, this article by Marina at Darkstar which goes into more depth about the history of whole signs and how it fell to the wayside, and a PDF by Chris Brennan listing 12 reasons why WSH is best. I’m not going to try and explain it myself, because they have done an excellent and thorough job already.
Whole signs offers what I have been looking for: simplification. WHS does not take the Ascendant and put it on the cusp of the 1st house, nor does it put the Midheaven on the cusp of the 10th (gasp!). Instead, the sign of the Ascendant is the 1st house, and the zodiac lines up from there. No splitting signs between houses, no intercepted planets. The angles are no longer house cusps, but sensitive points.
To illustrate the difference, here is my chart first in Placidus, and then in whole signs:
You can see in Placidus I have multiple intercepted signs and planets, but all of that is removed in WSH. Signs line up with houses perfectly. This speaks to me because I already practice the concept that sign boundaries are hard lines (Mars at 29º Cancer and Venus at 0º Leo are not conjunct, as an example). To be frank, it spoke to me on a personal level first, because in WSH my Aries and Libra planets moved to H2/H8 respectively, and it was like I saw myself for the first time. Everything in my life made sense in an instant!
It’s nice to still be able to have those aha! moments, even after a lifetime of practicing astrology. Although I haven’t done any readings since the switch, I will be using this house system for all readings going forward, and I feel like it will really take things to the next level.