The development of lighter but quicker setting anchors mean that it is no longer necessary to have over-large anchors, especially with all chain rode. My 34 footer is totally happy with a 22kg (49lb) Super Sarca, which is one of this type of multi-bottom capable anchor, usually with a roll bar arrangement to help ensure quick and reliable setting. In your part of the world, Sarcas are still a bit hard to get, so I'd go with the Rocna/Manson Boss or Supreme recommendation mentioned above by Pau Hana, if you can't source a Sarca, (Super or Excel).
After all, the main function of the anchor is to set well, set deep, and fix the end of the rode. The setting quickly and deeply being the operative functions. The absolute weight is relevant in assisting setting only so far. After all, the force needed to pull two anchors along a flat and unyielding bottom, one heavy, one lighter, is not that much - they would just skid. Its the seabed penetration quickly and reliably you are after, and evidence is these later generation anchors do that better than most.