TvT Alternative's

Hey Guys,

I've been playing Starcraft 2 for about three months and I'm having some problems in TvT and I'm wondering if I could get some pointers.

I'm pretty happy with the progress of my macro and micro. I normally go for 1 rax FE with fast upgrades for a 10 min MMM Stim Combat shield +1 attack push (I stole this build from Polt, I really like his play style), Then go from there. And with HOTS I like to add widow mines, some times opting for a drop instead of a push. 

I am trying out a Reaper expand build, need to try and get my control better to be able to pull it off successfully.

I tend to hold back a bit TvP and get a slightly larger army and be more aggressive TvZ. I feel this is working out well for me and I'm seeing some very real progress.

Where I'm coming unstuck is TvT. Marine tank just seems to own my face. I've tried various marine tank builds, and I've been horribly murdered most of the time. I just don't seem to have the proper control (Or maybe the patience) for a marine tank style of play.

Been looking around for advice on the internet, and found stuff about bio being more mobile, so I should exploit that. But with missile turrets (and now widow mines). I find drops just flat out get shut down.

Is bio viable in TvT? Am I missing something? Should I just try harder to get past my mental block and get used to the fact that marine tank is the style you play in TvT?

Any help would greatly appreciated. 

P.S Any links to replays / Pro Gamers that I should check would be awesome.