Spektrum is why I am doing it too. That and the helios just "feels" better to me. I know its just a mental thing but it just felt like I would be faster using it lol. Confidence counts!
I am going with the Helios Tx only purchase then getting a Spektrum right away also. Still come out same price or cheaper than the Helios with modules, receivers, and servos. Then will use the XS3 as a backup.