I hear lots of fors and against on this topic, I am just wanting to open it up again.

What is best for BP?

Melamine enclosure measuring 1200mmL x 500mmW x 350mmD or racks with tubs measuring 800L x 560W x 175D, outside dimensions.

Rack would be heated with heat cord and enclosure heated by side mounted light down one end.

Thanks in advance.