Grandeur park and Parc esta is about the same league in terms of accessibility, mrt, food etc.
I personally find grandeur park more conducive to stay compared to parc esta as D14 always has that Geylang stigma/crowd.
Grandeur park has good accessibility to jewel/airport, tons of mall in the east, near East Coast and Changi business centre. Parc esta on the other hand is nearer to city but the crowd there can be quite a big diversity. Not forgetting PE is a mega project and is slightly pricier than grandeur park (abt 100psf)
All in all, no need regret your decision as I don’t see any big disparity between the both. Each has its pros and cons.
Thanks for the inputs. This brings me to a question I always thought when I analyse; D14 and 15 are relatively nearby yet the great price disparity haha