Summary: This flash is an ideal one to use in manual and "A" mode. But it does not support any TTL mode. Can be used in studio and with the microscope.
Pros: Power! GN 45 at 35 mm and 100 ISO. Small recharge time (sometimes this flash unit (in "A" mode) can be used at 12 fps with my Sony A57 and Chinese adapter YN-H3). Durability (I use this flash for 10 years, and got it already in used condition).
Cons: No TTL mode. The main cable on my flash was damaged, so it took some time to repair it. Eats 6 AA batteries. Needs an adapter to use with hotshoe.
Summary: I have one of these extraordinary flashes and truth is unsurpassed. Recently acquired a bridge type camera (Fujifilm HS10) and is doing very well. The only thing critical is the size and weight, but that does not diminish its versatility and power.
Pros: Their autonomy in a strenuous work session is hyper-excellent. Even when placed as replacing a light flash, and offers great results.
Cons: I believe that only their bulky size and weight is their weak point
Summary: I used this for may manual medium format cameras and Nikon digital cameras. Powerful flash unit, and supports older manual focus cameras. Metz verified that the voltage is safe to use with Digital cameras, I've used it with my nikon d1X.
Pros: powerful, basic, supports older manual focus cameras, white light.
Summary: This is my favourite flash unit, I use it with my new EOS Rebel-D. Light is very nice and warm. This one is safe for digital cameras - sync voltage below 7 V (beware ct-1). Swivel and Title head. I'm just lovin to use it - I can live with out E-TTL.
Pros: Power ! Manual and program operation, low sync voltage, beauty light, build quality, low price