For colossus build, I summaries it into basically,3 stage in PvT for Terran to win (for me at least).
1) Stim timing push with rax only opening.
Make enough units, MM attack when stim is just completed. Usually wont work if Sentries able to FF the ram. But there r 2 advantages here, if P are goin aggressive with u, usually stim timing opening will win. 2ndly u can delay their expansion timing and u expand urself safely. *Just have to becareful, dun let the FF cut ur army into half.
2) 100 food mark.
If you didnt really receive too many harassment and ur macro is goin well, try attack P when u reach 100 food with 1 1 upgrade on bio weapon. Usually P the most will have 1 colossus. Utilize marauder stim to take it out easily. Beware of FF too
3)Max army with Viking and Ghost.
Make sure there are no observers!!! Cloak ghost is very useful imo, Separate ghost from main army to EMP early if possible (when there r no observer). Scan continuously to prevent sudden Protoss death ball engage without ur ghost clock n ready to EMP. Try target sentries and HT if possible. Around 3~4 vikings per Colossus is good. Upgrade Air attack, x2 for Vikings bcos they shot twice per round.
Other than this 3 scenario, MMM is basically dead against P.
Ps: Well, if u did a good harassment, u will win anyway. And try to look for observer always. snipe that spy. might decide the match outcome.
Added on May 13, 2011, 4:42 pmOther matter, i have been losing TvT now...

All Terran are going for early siege tank pressure against me. Delayed banshee build eat shit against this build. While I spend the resources into clock tech, they get the siege tech. Need to think other builds after this. I feel very risky build the delayed banshee build d.
This post has been edited by jeffvip: May 13 2011, 04:42 PM