I recently bought a HQ Kirimu Coat, but I'm unsure if I should put Dex IV in its second slot or try getting another Crit IV for that.

According to this site, Dexterity takes priority over Critical. http://www.ffxivguild.com/ff14-arr-a...ation-materia/

However I see many are going the route with the Kirimu Coat to try maxing it on the Crit as much as they can. Would more Crit or Dex IV Materia benefit me more?

Crit IV Materia are going for 400k-500k on my server and the price of Dex IV is 15k-20k.

Here are 2 recommended melds I found, http://www.ffxivguild.com/ffxiv-bard...me-gear-guide/

Cost effective melds: CRIT IV, CRIT IV, CRIT III x 3.
Alternative: CRIT IV, DET IV, CRIT III x 2, DET II

When you consider the fact that a Crit IV costs 50 times as much as a Dex IV on my server, the alternative given is much more cost effective than the meld labeled as such. Would Crit IV, Dex IV, IV, IV, IV be a better choice?