"Cyclers are nice because you can build a relatively large habitable volume, accelerate it *once*, and, then keep it there. The ships that you would use to reach the cycler can then be quite small -- just a little taxi, if you will. Thus, the overall fuel savings are tremendous.

By the way, I completely spaced out and used the term "cycler" innapropriately in my previous post. I was talking about an entire vehicle that would aerobrake back to LEO after every swingby, which *would* probably be the quickest to develop (since it doesn't require the development of a "space taxi" other than the Soyuz), but doesn't really have the advantages of a cycler. So, shame on me for conflating the terminology."

Hmm, how about a quasi-cycler. It parks at one of the L-points. Then when you want to use it, it leaves the L-point (requires about 50m/s delta-v), and enters a highly ellipical earth orbit which does not enter Earth's atmosphere. Your taxi meets it on leg out (say +500 miles above Earth) and docks with cycler. On returning you do same procedure (leave cycler on leg in at *somewhere* around +500 miles above Earth [with vehicle that has areobraking capabiity and enough rocket power to change trajectory so it hits the atmoshere].
The problem is you need to make the rendezvous. To solve this, you probably need the crew already in LEO, oppose to to hitting the launch window from a surface launch. If you add to this, the ability to reuse your taxi, then you get a redundant safety of being able to abort the rendezvous.