The inflection point on rakeback with Stars and Party

[ClaytonN]

In a post in the internet forum (Dear Lee Jones), we get the following:

[ QUOTE ]
For example, our (PS) rake is lower by:

39% for $.50/$1
20% for $1/$2
16% for $2/$4
14% for $3/$6
10% for $5$10

[/ QUOTE ]

This, however, does not substitute rakeback.

Given varying rakeback percentages, at what point is it best for a player to move from stars to party? I've discussed this with some friends and the general consensus is when you make the leap from 3/6 to 5/10, but I was hoping if somebody could crunch some numbers and get a better idea.

This obviously depends on the rakeback percentage quote you get but generally I'm hearing numbers around 25% for Party.