DELL M992 CRT V M993c - opinions / experience please

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Can anyone help here please?
I have been offered an M993c crt in place of the M992 crt.
I know the M992 has a flat screen and have used it before for graphics work.
The M993c is not listed as "flat screen" in its specs unlike other Dell
CRTs. It has a slightly larger Dot Pitch too ( .25 vs .243 on the 992).
Its face plate coating may be different too.
Can anyone comment - anyone here use the M993c graphics work. Is its colour
consistent?
(I calibrate my CRTs as required anyway - but you can't make a silk purse
out'a a pigs ear as they say)
Your comments appreciated.
Tim
Australia
nb: I am not refereeing to the M993s here.