A little Thonglor, more private but very enjoyable to live in. Many access to Thonglor and some nice condo projects.
If you like the concept of Thonglor but are looking for some more affordable condo, then Ekamai may provide you with what you are looking for! This is also a very convenient place to quickly join northern area of Bangkok suck as Ladprao, Ramkhamhaeng or even further Ramintra. The area is very green and you will find less high rise condos than Thonglor, this is a much more private atmosphere.
Same as for Thonglor there are many japanese and westerners that enjoy this area, but you will also find more thai people as well. The area is very lively and you local with all the popular bangkok street shops.
Ekamai road is a 3 lanes road, connected to Sukhumvit, Petchaburi and Thonglor at many places. Driving there should not be too much challenging as there are not too many offices buildings and condominiums (they are mostly hidden in sois departing from Ekamai).
The nearest BTS station is Ekamai, on Sukhumvit road. If you are on the very end of the street near Petchaburi you can also join quite quickly the Ramkhamhaeng Airport Express station that can lead you to Asoke or Phayathai to connect other MRT / BTS lines.
Plenty of choices for your shopping near Ekamai with Gateway Ekamai, a new shopping center recently opened with many restaurants and shopping facilities. There is also Major Cineplex Ekamai for movies.
Looking for food? You can go to Big C, a huge supermarket, you will find a lot of choices there!
Sukhumvit Hospital near the BTS station will be your best pick, but you can also find Kluaynamthai Hospital on Sukhumvit soi 42 or join Thonglor for Camilian Hospital / Samitivej as you prefer. They all provide great services but if you are looking for something international you may prefer Samitivej hospital.
There is less nightlife than Thonglor but still you will find something very similar with nice and friendly atmosphere in most restaurants / bars there. If you want more choices then just walk from Ekamai to Thonglor (using one of those shortcut soi) and you will be jumping to another world.
Still many restaurants to be found hidden there and some great bars so again do not worry much you will definitely have a restaurant near your place there, and this is almost guaranteed that it will be a good one!