In my opinion, I would likely take Texas on resources and finances alone, but Florida would be a close second and nose to nose with USC.
Florida edges USC slightly because of the player pool available to them in the states that border Florida. USC does not have this luxury with the states that border California.
Texas is perhaps the biggest national brand in sports there is today. From a resources standpoint, they are the only team that could compete with Alabama when it comes to the ability to get things done when needed as a program. Fan base, alumni, booster support, player pool for recruiting, image, branding, etc., are all at a premier level, and this is why if Texas were to make a change that financially if they wanted to, they could get Nick Saban at Alabama to at least listen.
Texas might be down a bit now, but there is not a coach in America, including those at current top-10 programs, who wouldn’t jump at the chance to be the coach at Texas. Yes, Texas is that big.