I like TetraMin. You can drop in some food in the tank and BAM! You be cyclin'!
There are MANY ways to fishless cycle a tank... even peeing in the tank will work... BUT to make a tank instantly cycled, using a product like Dr. Tim's One And Only is the way to go so you can add the One And Only, test it with the ammonia sample and if the ammonia cycled all the way, as it should, then you can add ALL of your fish and know the tank is fully cycled.
Fishless cycling methods, while the preferred method for folks that don't want to put out the added expense of Dr. Tim's One And Only, usually takes 2-8 weeks where with Dr. Tim's it's instantly cycled.
NONE of the other bacteria in the bottle products work like this... except for maybe Tetra's RightStart (since it is supposed to be the old Bio-Spira product under Tetra's new name). From what I understand, Tetra still sells it under Bio-Spira for SW use. I don't know why they changed the name for just FW use.
I think newbies should do a fishless cycle so they take that time to learn how the nitrogen cycle works, they have time to work on their stocking of their new tank, take one or two of the free online tutorials on my "A to Z of Fish Keeping" blog, etc.. I also have a TOP TEN LIST of reasons for Fishless Cycling on my blog... with some funny reasons thrown in.
http://goldlenny.blogspot.com/2010/05/top-ten-list-fishless-cycling.html