I have been looking at the Kontrol 61 from NI which would obviously be a great choice as I have Komplete 10 Ultimate, but the Akai Advance and Nektar Panorama also look interesting.
Does anyone else have other recommendations and why?
I want to have hands on control of as many parameters as possible to manipulate the sounds in real-time, without having to go to the laptop keyboard all the time. 
Quick and easy integration with Sonar/Komplete is also a requirement.
Is anyone else using Komplete and Sonar?
What are your experiences regarding which keyboard you use, or which would you buy if you were purchasing now?
Many thanks for any feedback/info

Can anyone point me to another thread/post that may help?

This is a hard question to answer. It's so about you and how you play.
 
Are you going to be hauling it around?
 
Keeping it in a closet?
 
On the desk below your monitor?
 
What are you going to control and how?
 
Have you done any research? Shopped around? What are you looking at? Could you share the class of thing you want?
 
I play a Yamaha YPG 235. It's fine for my needs but nothing fancy.
http://www.amazon.com/Yamaha-YPG-235-Portable-Graded-Action-Keyboard/dp/B003FVB7XA/ref=sr_1_4?s=musical-instruments&ie=UTF8&qid=1451521349&sr=1-4&keywords=ypg-235+yamaha
 
If you plan to learn large keyboard parts, it's nice to have more keys than less. Also, because of the on-screen touch keyboard in Sonar, I don't need to carry anything around with me.
 
 
 

Everyone has criteria important to them.
 
For me, hammond organ simulations have 9 drawbars and nearly all master keyboards only have 8 sliders.
 
So I gave up on those with built in controls, got separate controller and
I got the Korg miniKeys 61 (new versions coming with foot pedal and even with bluetooth)

There is another thread on this topic.

I went for the Komplete Kontrol S61 myself. I very much like the touch and response of the keys. The light guide is very helpful. Personally, I like the features - such as scale settings. I don't need an onscreen monitor on the keyboard itself to make a patch selection. It's on sale for $100 less than usual through the end of the year.

Please check AKAI advanced how much they integrate KOMPLETE. Then decide for Komplete S61 with NKS as many of the VSTi adopting NKS. I regret for buying S25 as that time I didn't have fund, wish I took S61 instead S25. Light guide is awesome and helpful as Lawajava suggested. Also Gswitz adviced to do some research and look around before you finally jump.

Hold off till after NAMM. There are going to be some new boards released this year.
 
Kontrol/Advance both have great features and are solid boards. You need to decide for yourself what will do what you need it to do and what features you want and will use. A lot of these boards have many features I'd personally never use regardless of how cool they are on paper.
 
I personally like the idea of Advance and that the company themselves are mapping everything rather than relying on developers. That said, if Akai ever decides to stop supporting it after a couple years, then it will be a nice controller with few features that are usable.
 
I'm personally waiting to see what Novation announces this year.

Also please don't rule out Roli's Seaboard

Thanks for the helpful responses.
Already decided on a 61-key as I already have a Yamaha 88-key E-piano. 
It won't be transported much (couple of times a year at most) and it is mainly for integration with Sonar's synths and Komplete.
Real-time parameter editing is important so I can manipulate sounds on the fly. Komplete has some great synths like Rounds which would be ideal for this purpose.
The logical thing would be a Kontrol S61 I suppose, as I have already invested a lot of money in K10U. I just want to make sure I am getting the most value for money and, more importantly, to have an easy a set-up as possible and a fluid workflow. 
I will research after Namm and then see what the situation is.
Thanks again.

SnehankurAlso please don't rule out Roli's Seaboard

At $2000 for a 37-key board, it's already been ruled out in my books. I'll wait till one of the other companies makes a similar product at a much lower price before I consider it. What it does is simply not worth the inflated costs in my opinion.