I'm yet proud another 3DS XL owner. It's so comfortable to hold that I can endure a long gaming session that doesn't involve extensively using its Control Pad. With the large screens, my eyes won't be ever squinting like I did with the past 3DS and DS handhelds (excluding DSi XL). My only complaint is that the speakers are a bit too quiet for my tastes.
Also, I got the standard model of the Japanese New 3DS. Its ergonomic is basically a slightly bigger variation of the original 3DS with the more-rounded edges of the XL, slightly larger triggers and screens. My hands can handle this beast just fine, but I don't like on how thinner the stylus is compared to the original 3DS one. I'd say it's well worth trading your current system for any New 3DS variation, or even buying it if you somehow don't have any 3DS system yet.