This Dell 2007FP is the monitor (with the silver speaker bar across the bottom) you have been using with the Picasso II and Indivision ECS? It shows all resolutions beautifully?
For Amigas without RTG, I use Sony's 25" Trinitron. It does a very good job, but, won't up-sync to RTG modes.
It doesn't go down to 50hz very well, PAL screenmodes are sometimes not displayed, or off-center, but for the main screenmodes I use (Spectrum: 800x600x16 bit, Indivision 800x600x16 color) it does brilliant.
I've done quite a bit of fiddling with the buttons and tweaking settings in Picasso96. Seems the only modes it really has an issue with are those that drop below 50Hz. The Spectrum is kind of a crappy card and has a lot of these modes, I.e., it'll do 1024x768x16 bit but even with the clock speed ramped all the way up it's only at like 39Hz, which puts the monitor right into power saving mode. 1024x768x8 bit works though, because that outputs at a nice, solid 75Hz, with an 80MHz clock speed. Obviously a graphics card with a faster chipset would work better, but I'm happy enough with the Spectrum. And the pass-through on the Indivision modes is rock solid. If anything, the Indivision modes are even less problematic than the Spectrum, probably because it's newer tech.

Long story short, it's really all about how much you fiddle with it, and about the software that you want to use. PPaint is absolutely gorgeous, as is just about anything that runs on Workbench. WHDLoad games can be a bit troublesome, but that's more because of the Spectrum and all the other hardware I have crammed into this thing (wasn't there a thread about that a long time ago? That the Spectrum basically breaks WHDLoad?) , not the screen.
It does play my old AD&D games like Pool of Radiance just fine. That's my priority when it comes to gaming.

Edit - I just noticed you said Picasso II. I had two of those and sold them both on, never could get their pass-throughs to work with the Indivison. I had some tips from Jens to try, but never got around to it once I found the Spectrum card.
