Help selecting Desktop for basic video editing.

I have a T7500, T3600 and some 3 x 9020 and have used them all okay with video editing.  I haven't had any real problems with any of them although I mainly edit in HD not 4K although I have dome some still with problems.

Whilst that is the case I am looking to get a more modern rig to replace the T7500 but I am not sure what to get..

Due to economics I go 'used' and am looking at the models 5810, 5820, 7610 as they seem to be more available in my price range.

I see the CPU E5-1650 v3, 1660x4, 2620 but also not sure what is the better.

It needs to hold 4 HDDs as the T7500 does.

I know it is maybe Mickey Mouse to some, however price keeps me in this ballpark.

Could I get some ideas about choices please.

I could go out of the Dell sphere but if possible will stay.

Thanks