If I had to base my recommendation on my personal experience, I'd caution against the 10-13.4XL. My folks bought it for me as a gift before my checkride. It's got the fancy ENC feature, but here's the problem. I sent it in once because the cord got loose somehow and separated from the ENC unit, which means I couldn't plug it into an airplane. I got it back, but when I use the ENC feature, I hear little noises that sound like...well it's hard to explain. It sounds sort of like a quick, low tap, and it interferes with the sound cancelling for that split second. It just makes the whole ENC feel very uncomfortable and irritating on the ears. So I don't use the ENC feature. Not until I find the time to send the sets in. I would definitely recommend getting a David Clark. Their service and warranties are unmatched. I just think you should save the cash and get a regular 10-13.4. It's all ya need.
Good Luck,
Adam