Hi all, i have asked help from this forum a while back regarding a 5D mark2, But then i had to cut down my budget due to personal reasons. My only viable FF option is a 5D Classic/Mark1. Focusing on Events, Landscapes and Lowlight photography, would the 5D Classic give me good IQ for prints for my interested field in photography? Would a newer camera beat the 5DC in terms of IQ, DR, etc. ? Btw, I already have EF lenses for FF. Thanks 
Definitely still worth buying. One of the best cameras canon has ever made. I know plenty in the wedding market that have actually gone back to using the MK 1 as their primary during the day as the sensor produces gorgeous skin tones from its RAW files.
I use the MK1 as my primary and shoot up to ISO 1600 no problem. Pretty much all the lenses I use are f/1.4 and I know what shutter speeds I can handhold.
I checked out a RAW file from a 7D and my 5D out of interest for noise performance at 3200 and the 5D won. I never shoot as 3200 though.
If a shallow depth of field is important to you - 5D definitely wins there.
Dynamic range is big on the 5D - but I my camera before that was a 450D so probably not a fair comparison. You can bring
a lot back from the highlights in your RAW processor of choice without any noticeable noise.
I got mine barely used as a studio photogs back up camera. Less than 500 clicks.
For £700 - Surely the best bargain camera you can get.