dutast, adovart etc are fuckin dangerous. may more potent than finasteride. even finasteride (the less potent, more scientifically researched) is risky business.
im not sure alot of people realise how serious these drugs actually are. when you choose to go on finasteride, dut etc. you choose to take on board alot of very serious side effects. these are drugs actually altering brain chemicals.
there is alot of cynism surrounding dutasteride and for good reason. do your research before you make a decision (hairlosshelp.com forums are a good start)