I am planning to buy a Tx this month
I have three options in my mind
1) Spektrum DX6i-Rs 13000
2) Futaba 6ch- Rs 14500
3) JR Propo DX7-Rs 19000

since this will be my first 2.4Ghz Tx i dont want to make mistake in buying for which i will later repent...
so its my request to all the expert fliers and senior experienced people.....to help me out taking the decision
that which one will be a better investment.....  ..........................
and the reasons.....for selection....with keeping in mind the fuctions
as i will be using it both for heli and planes

You can also consider RDS8000 from RCDhamaka, If I had your budget, my preference would be:

1)DX7
2)RDS8000
3)DX6i/Futaba 6.

I myself use RDS8000 with Assan hack,

Advantage of going spektrum is getting cheap version duplicate receiver from hobby city. I dont know the reliability of these Receivers

Myself since I had RDS8000 already with me and the receivers of RDS was around 3.5K approximately, I installed a Assan Hack into it which is in my opinion more reliable than spektrum duplicate receivers.

Search - RDS8000 assan

Hope this helps.

Compared to 19,000 for a DX 7, the Sanwa SD 10G with 2 Rx, at 22,222 (from RC Dhamaka) is a better buy.

Get a Sanwa. Local support and availability, plus will last you for a long time if you handle it well.

Even i use Sanwa RDS8000 and really like it.

Another thing you need to consider is connectivity with your buddies. Say there are lot of Futaba and JR guys with whom you can buddy cord. This is helpful. But Sanjeev from RCD was telling me that he was coming out with a buddy cord that can connect anything to anything. Hope this rolls out faster.