Help with thumbnails taking up too much space topic

Hi i set up my advancedsettings and they are working fine,mbut i seen lots of complaints about thumbnail taking up too much room, so to avoid that problem i want to set up some advancedsettings to stop this before it happens..


Im using the easyadvancedsettings tool in xbmc, can anyone tell me some good numbers to set so thumbnails dont take up too much space...


Thanks