Most economical stable stock 100 ton payload to 75 km orbit?

[Montag]

Have there been challenges to come up with the most economical designs with career mode for launching payloads to Kerbin orbit? I loved the http://forum.kerbalspaceprogram.com/threads/33381-0-20-2-Zenith-rocket-family-%28modernised-for-0-20-x-with-perfect-subassembly%29 Zenith rocket family lifters, but they are not the best cost when compared to the newer parts.

It would be useful to get the most economical and stable lifters for payloads ranging from 15 - 150 tons. A legitimate challenge that would benefit the community.

If this has been done before, then please point me in the right direction. I have plenty of cash because of my flag garden on the Mun, but I will be having the mega missions soon for the Jool system.

[Kasuha]

If you don't exclude jets then most economical way to get 100 t to orbit is using some 20 turbojet engines. It can get the job done with no staging and return to KSC for full recovery, all you pay is fuel.

[Montag]

Sent reply to Kasuha instead of thread ...

I found this challenge further back: http://forum.kerbalspaceprogram.com/threads/87211-0-24-s-Cost-Effective-Lifters-Challenge

I was basically looking for a modern version of the Zenith family - not really reusable.

[Stratzenblitz75]

If you aren't against Turbojets, then these lifters should do the job. They can lift payloads at a rate of 22 funds per ton if the launch vehicle is fully recovered. The largest lifter, the FLS Titan is capable of lifting 164 tons to LKO and it only burns 3700 funds in fuel.