[cheungtsw]

I don't need DAC.
I am currently using the TripleFi10 and will consider headphones as well in the future.
Which one should I get as there are so many models?

 

[freakhistorian]

Price range?
 
If price is not a concern spring for the top-end ones... It's been said frequently around here that the SR-71 series (A or B) are able to drive even hugely demanding cans easily. If you get that, consider it sort-of future proofing your purchase...but it's going to cost you though, RSA products are priced at a premium.

 

[Jalo]

If you are only using UETF10 and also iems in the future, then the Mustang or shadow will do the job nicely.  They are also much smaller to carry around.  But if fullsize headphones are in your future, I personally like the balance sound so SR71b will be my choice.