"need op-amp advice" conclusions

Hi,
Here's the conclusions to a search for "high input" op-amp.
First off- my last "topic post" listed a differential op-amp "MSK130", here's the additional pages for "ultra high voltage op-amps"

Apex PA89 (input 600v typ)(1200v max)

**broken link removed**


MSK162/163 (input 350V max)

**broken link removed**

For wideband Applications:

MSK601(B) (input 120v typ)(150v max)
(((3000V/us slew! 70mhz@ unitygain)))

**broken link removed**

Purchase info:
Apex is available at their Estore:
**broken link removed**

MSK sales reps page:
**broken link removed**

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OK, that's about it for my search!


Vince