She has quite a colourful little collection now.

Re: Differences between small Olympias.   The SF and SF Deluxe are pretty well the same machine under the skin.  The Traveller was developed from them and has a few differences.  The cast frame is a lot different but many of theother  mechanical parts (I would guess about 90%) are the same.  When the Traveller became a cheaper mass-market machine here in the 1980's (sold through normal retailers and no longer exclusively through Olympia typewriter dealers), the quality began to slip a little.  However, it was still head and shoulders above other makes right to the end.

Is this the solution to my ne SM3’s ills?

http://clickthing.blogspot.com/2011/03/amazing-floating-olympia.html?m=1

I finally found a decent Olivetti Studio 44 today, to round out the collection.  Amazingly, its platen feels nearly new, and I suspect that this machine was barely used.  I am sad (if not surprised) to report however, that yep-- mushy type action.  Not bad, mind you, but nowhere near as nice as a 5-Series SC, for instance.  It's like there's a mini marshmallow to cushion the last 10% of each keystroke, and it feels very unsatisfying to me.  The typeface is darn straight, though, and beautiful to boot.

The tower grows taller...

I found this somewhere online, and although it doesn't make me dig the Olivetti type action, it does make me appreciate it as a valid alternative; as an alternate whole aesthetic:

When you strike a key, there’s a measured pace to the typebar. According to Olivetti, “the typebar movement is based on the principle of progressive acceleration.” Somehow it almost doesn’t feel mechanical, but more like an extension of your fingers. Other typewriters feel like they’re translating your energy to levers and joints and springs. You’re working the machine. Not so with the Studio 44, which has a softness to it, and seems to mute the actual mechanicals at work. After typing for awhile, you have the sensation that inside this machine are tendons and muscles and bone. There’s an addicting quality and a bond begins to form between human and machine. Isn’t that the goal of any artist’s tool, that it becomes one with it’s user?

Almost Cyborg, with the reference to tendons, etc... Like keep a "typing flesh golem" in one's office to take dictation!