Having shot film since Feb 2006, I have finally taken the step into the world of Medium Format in the Six by Six (6X6), 120mm format.
The only machine I have for the 120mm is the Yashica Mat 124, f3.5. With the super value for money Yashinon taking lens, I am in love! I have bought a stash of Arista Ultra 400 (which is actually Fomapan 400) as its one of the cheaper B&W film out there at this moment.
The Arista's provide a good grain structure and tone for the price of about US$3 each. By far, my personal favourite is the Ilford Delta 100 and the TriX.
It looks like I am going to spend more time on the 120mm format!