Hi, below I've listed my favorites.

1. Suomi Hand Script
2. FF Mister K Pro
3. Louisiana
4. FF Hands Pro
5. Liza Text Pro

SB

Run your mouse over the Sudtipos landing page and see if anything grabs you. Or check this list at FontShop.

Unlike in calligraphy, there can be no "realistic handwriting" without... mistakes!
So there is only one font that qualifies, #2 on Sevag's list.
http://fontfeed.com/archives/upcoming-fontfont-mister-k-pro/

hhp

Don’t forget beautiful Olicana by Nick Cooke.

FF Mister K is one of the best handwriting fonts I've ever seen, so fun to use.

I love how Tomi's script ignores the baseline.
Mister K is brilliant in many ways, but it sticks too close to the baseline for an otherwise casual and idiosyncratic face. Still, that does make it "loose but not overly sloppy", as requested.

Thanks Renko.

Soon to be released in Rough and Smooth styles...

Sorry I forgot Olicana! Awesome.
And the only other one that works I think.

hhp

Hey all,

Thanks for the great recommendations.

Mr. K looks pretty dang close to what I had envisaged. Added bonus: it will give me an excuse to use the term "kafkaesque" in client presentations. Although, that might not go over so well.

J

Mister K’s brother to arrive soon …

Mister K’s sister is sweet … ;^D

Oh and there is another digitization of Kafkas handwriting simply called Kafka

If Underware would release Mr Porter for retail, it might be the best on the public market, I think; right now its still under license by the studio that commissioned it.
http://underware.nl/custom_type/mr_porter//