Well Mark, I've always loved the Flanders stuff because of the many, many, many features. So good to be able to check things in the field like waveform and audio levels as well as a decent focus assist. At present I shoot with a 7" and post with a 21".
In addition to two SDI ports our Flanders also have a DVI input which I use when switching over to the Canon C 100.
Now the part about the bank, not sure what your budget calls for but I feel I have definitely gotten what I've paid for with each of the three Flanders I've owned.
If you can't afford Flanders, I have a small NP-F powered Marshall that does a pretty decent job.
I think it ran about $500 back when I bought it years ago.
The thing I really appreciate is its "false color" exposure display mode. I use it a TON for stuff like quick chroma and luma key light setups and for when I'm renting a camera type that I'm not overly familiar with. It's pink 80 ire swath across most of a face lets me know I've got the exposure nailed on THAT. And the colors surrounding it let me know what's over and under-exposed, by comparison.
It will be interesting to see if the new Apple Pro Display turns out to be as good at color as they hint it might. If I could invest $6k on a BIG computer display that would double as a RELIABLE field monitor and NOT need something from Flanders - that might turn out to be a game changer.