I am using the profiling software "Profile Maker" - is this a reliable way to create profiles?
Assuming you're describing Gretag MacBeth's ProfileMaker Pro 5, Yes it is a very good and reliable program.
However you do need to know what you're doing to use it properly. Not only with respect to printing the charts needed for measurement to build the profiles, but also how the program's options need to be set and finally you need to know how to use a colour managed workflow to use the resultant profile correctly.
Either you're commenting here too quickly to make enough sense for people to help you or maybe you don't understand some aspects of the above process sufficiently yet.
When seeking advice on colour management issues it is essential to give exact details of all the equipment, software, OS, processes and settings you're using, in standard terms, for the community and experts here to be able to help you effectively.