My personal suggestion is go for sonipat, as the latest news is that there is railway coach conpany coming in which will boast up the infrastructural demand of that area.even the center govt has realised the importance of sonipat . so go for sonipat
Hi buddy in real estate, the thumb rule is to invest in a new area where prices are rock bottom and have good potential to grow. People who have invested in early 90 s and 2000s they already got a good return from Gurgaon same with those who tried their luck in Dwarka in early 2000s or with Noida. So you need to check up that new region as long as has good connectivity and is closer to Delhi is bound to yield good returns.
Real estate in Delhi NCR region is more positive and have profitable returns. Sonipat is growing, but Yamuna expressway, Noida expressway and Gurgaon are already on the track. There are good projects in Sonipat but as said my Mr. Jain they will take some time. Try for Gurgaon. What is you budget so that can give you perfect details of the projects.
Sonipat is a rising sector, if you are looking for a future returns after 2 years or so, you can invest in sonipat easily. in what kind of investment are you are interested.