[Delraich]

I have a silver terran practice partner (I'm still bronze btw!) who has taken a shine to tank heavy builds that I am struggling with at the moment. He has a defensive style where the natural is turtled up with many (e.g. 5-7) or so tanks on the low and high ground (e.g. main base), with a fair few marines and a couple of marauders, and he also makes a planetary fortress. From this he then tends to send out banshee or the odd ball of medivac drops which gets annoying. I want to attack him back, but going into his defence is seriously annoying and I am not sure how to not waste my army engaging this lot. When I look at the graphs I often have a much bigger graph that then plummits after the attack.

He also has an aggressive style where he goes one base with marines, marauders and about 4 or 5 tanks (he doesnt bring SCV's). I have been practicing my map control and I saw the marines in the beginning with the stalker poke, so i decided to go for collosus. I then saw the tanks rolling in, following them with my obs, and watched them seige at the base of my ramp, scan and start shelling my main. with the army at the top waiting. I was on 3 gates, robo, robo bay, expo. I had 2 collosus and some gateways (a bit of each: sentries, stalker and zealot). Should i have gone immortal? should i have run down the ramp and tried to engage sooner?

I read the how to stop terran cheese guide, but I am still not clear on how to stop these evil tanks!!