For every 100mg of tren I have to take about 60mg winstrol. I am real sensitive to this stuff though. I also use nolvadex with, but that is probably overkill.
Honestly, if you stack it right you can get awesome results off 50mg (about .8cc) of tren ED. This would mean using 50mg tren, 30mg winstrol, and a small amount of d-bol (if cycle is 6 weeks or under) or a safer choice would be some test.
remember, tren is three times as androgenic as test, so if you are used to taking a gram of test, you will get results off 350mg of tren a week.