There are some other options out there besides the ones already mentioned.
Personally I use RM now I've got my head round it but I still need to use webCoRE for around 10 rules that I cannot do cleanly on RM. webCoRE let's me do these rules easier.
There is also Event Engine written by @bptworld.
A lot of people are using it and find it easier to use. There are numerous choices out there.
Perhaps give them a try and then use the one that suits you best.
