Bud, I'm sure you're gonna hear 50 opnions of yes or no, it really depends on what's important to you in a phone and what you do with it. I'm not a Developer, or chip, IT knowitall, so I can't give clockspeeds and processor criteria to you, no doubt some others can but for me and what I have educated myself with, the new INC 4G will be just the ticket for me.
Getting this s4 I think Krait processor, which is a big upgrade over what most phones out currently have, though some out might be bigger or faster but not many. Removable battery, sd card, 4G, ICS, and a nice size 4".
If you looking for a bigger phone, some other options out there might be more worthwhile for you. I think the new screen is QHD which is not quite 720P if I understand it correctly but a deffinite improvement over my amoled INC