Are there any good Sikh "missionary" colleges? I mean colleges for training new Sikh granthis, raagis, and preachers, etc. I could only find a few, and I really have no idea which one is best. I know three: 1) Sikh Missionary College, 2) Gurmat Gian Missionary College, and 3) Shahid Sikh Missionary College. Are any of these colleges any good and are they open to all ages? Are there any other ones I did not mention?