Me too... with a few additional thoughts:
At 1:32 there isn't currently much competition for Corgi, but clearly the FOV 1:32 line is far, far inferior. It will be exciting to watch what HM does with a 1:32 line.
At 1:35 there isn't anyone but GMP, is there?
At 1:48 EI's upcoming Texan release will add much needed depth to their line, and inform the collector about EI's continued commitment to quality, detail, and realism. I would put C1 above EI for variety and selection (obviously), but EI ahead of C1 for overall mold detail, nice display stands, and no wonky rubber small bits. As Hobby Master and Corgi expand their 1:48 lines (hopefully) and FM continue to improve its lines (hopefully), 1:48 might, in the future, have no clear leader.
At 1:72 I have no additional thoughts; KG_Jag stated it well.
At 144 I can't comment as I have no knowledge /experience with this scale.