I had the same problem 3 or 4 years ago.. I even posted a topic like this I think :mrgreen:
But unfortunately as stated above, there is nothing currently available that is the same as the Ti. Radical MP.
I currently use the nBlade, it's a step in the right direction, but it definately doesn't play the same as a Ti.Radical MP, the nBlade has a mucht higher swingweight.
You could however, try the new kBlade. On paper it has a considerably lower swingweight than the nBlade, so it's more like the Ti.Radical MP. The kBlade (on paper) is a little stiffer, but I never felt the Ti.Radical was as flexible as the specs said. I haven't played with the kBlade however, so I can't tell from own experience.
Otherwise you could try the Fischer M Pro #1 98 light. Plays a little like the Ti.Radical, but with more power and again, the flex feels very different from the Ti.Radical.
Furthermore, on paper, the new Dunlop Aerogel 300 comes close. Haven't played with that either however.