The most commonly used House systems are Placidus, Koch and Equal Houses. Personally I like Koch Houses for those of us born north of about 45°. Astrodienst uses Placidus Houses as their default – a strong recommendation and I have friends who swear by Equal Houses though I’m not too crazy about them myself.
Placidus and Koch agree on the Angular House cusps with shifts on the other house cusps. Equal Houses uses the degree of the Ascendant to determine all the other house cusps and has the Midheaven as a separate degree point.
Check to see what planets change houses when you switch systems to help figure out what feels most accurate to you. If you have a stellium including personal planets playing musical houses that is a good place to start. Using Koch and Equal Houses my Sun, Mercury and Mars are all in the twelfth house. Placidus places my Sun and Jupiter in the eleventh with my Moon. However, I feel far more like a twelfth house person than an eleventh type. I am content spending quite a lot of time by myself rather than needing to belong to this group or that organization. The twelfth house is one of the water houses and my preference for the intuitive approach is a good fit.
Do you have planets shifting back and forth between the first and second houses? People with a strong first house presence are almost always more forthright and active like Aries whilst second house types are more concerned with the practicalities and making sure they have a degree of financial security. The difference between second and third is third house types are far more social and intellectually inclined.
One obvious difference between a fourth and fifth house emphasis is how engaged you are with family matters. A fifth house type would rather make art or play than spend time with mom and dad. Sixth house types tend to be very involved in their vocation or are diligent about taking care of their health instead of having a good time.
Seventh house people love having a partner or companion around whilst eighth house people could care less. Lots of planets in the ninth could mean you are a perpetual student or love traveling . . . getting all caught up in personal angst, not so much. No question tenth house folk are high profile and enjoy it whilst eleventh house people like being one of the gang.
You can also carefully follow Mars as it moves around your chart to help determine where your house cusps are. Mars moves quickly and usually carries enough “punch” to make his presence felt.
Whatever house system works best for you is the right one. I’m also a big fan of keeping things simple and it is far too easy to over think astrological details. There are so many of them after all.