Regarding your question, Elmina vs Eco Santuary etc.
One is Klang Valley north, the other is Klang Valley south. One is Sime Darby branding, the other is Eco World brand. If you visit and compare both developments , you can see and feel some differences in the home architecture and environments.  Every buyers are entitled to their own preference and tastes. I am aware that a lot of ES buyers are attracted with the EcoWorld branding, the ES modern/contemporary/Cubism home architecture, the resort-like facilities and the close proximity to at least 3 international schools for their kids. Eco Sanctuary is marketed as a luxury home.  I believe most ES buyers are successful in their own way as these are expensive homes and they can afford it. Some may buy the ES home to show off their wealth and make a statement of the lifestyle they have. e.g. Grandezza Altimo super bungalow etc.

Regarding LH vs FH.
This topic has been discussed so many times. I am sure many of these smart, successful and wealthy ES home buyers thought well about this factor.
There are more factors that need to be taken into considerations when buying a home other than the LH vs FH factor. Obviously freehold is nice to have but other factors like affordability, neighbourhood/environment and location are more important.
As the price of homes become increasingly expensive, the determining factor of whether a property is worth buying may no longer weigh solely on its LH vs FH tenure status. This may be especially true for first-time homebuyers, where affordability is the first hurdle to tackle when buying a home.
Given the demand for freehold properties, the supply may be limited and could even reach a point in time when buyers may not have much of a choice. By then, the factor of freehold or leasehold could even be rendered meaningless.
To put it simply, of course, it is better to buy freehold over leasehold properties (given that all other factors of locations, price, type, size etc.) but it is not the only or most important factor nowadays. In the end, it depends on individual buyers on whether it is worth compromising on freehold status for other factors like affordability ,environment and location.
Besides that, residents of Selangor will be able to renew land leases under the Private Residential Ownership Scheme at an affordable token premium of just RM1,000, instead of the current market rate, provided they remain on the property. For folks that plan to remain in the property in a long term or pass on to their kids.  It is a non-issue.