re: Rehiras Sahib.. the panth on the whole will never agree any time soon on what rehiras sahib to recite... for this reason its an individuals choice, if you are stuck, discuss with panj pyare. we need to keep as much ekta as possible within the panth. for this reason its an individuals choice which Rehiras Sahib to recite, leave it at that.
re: Sri Dasam Guru Granth Sahib Ji ( < i know im going to get knocked for this) - I just want to make the point that, we all know Sri Guru Granth Sahib Ji in its earliest forms was refered to as "pothi sahib", then "adi granth sahib".... at this time, Sri Guru Arjan Dev Ji Maharaj put the holy Gurbani Sahib on his bed, and Guru Sahib slept on the floor.... This was done before "Sri Adi Granth Sahib" was declared "Sri Guru Granth Sahib". On this basis... ALL gurbani should be given the ultimate respect. Bani Guru Guru Hai Bani Vich Bani Amrit Sare.
for those that do not believe that the revered Granth Sahib is the complete works of Guru Gobind Singh Ji, you will not agree with what i have just written. this is fine.... belief is an individual thing....