soy depends on who you ask. in all honesty i felt great when i was on soy milk, really strong. I went on it originally as i have sa slight alergy to cows milk - i.e it gives me sinus.
Its your decision to make on soy, some swear by it some hate it. My mother, whos deeply into all this as well's argument is that yes, soy may be not the best, but people consume a lot of things that are probably not up to scratch long term either. Especially somthing like aspartame which is found in most diet drinks.
the main spin on soy seems to be that un fermented soy = bad. this includes tofu, soy milk etc. fermented soy is tempeh i think? you would have to check. read the facts and make a decision that you feel comfortable with.
Do some research and make up your own mind, but be warned its one area that really polarises people. I still consume a little, by virtue of a sustagen that i have for morning tea. Apparantly the risks are higher for females.
As for meat substitues, run, as far away asyou can from Sanitarium chicken schnitzel substitues. thats one nasty meal. cosistency and taste wise.
there are osme great things that you can get just in the local supermarket. in the cold food section near the cheese you will find a lot of patties and things like that. theres some fresh looking one there that are great. cant remember the brand tho.
Thylos tips are great, ill take some of them on myself