I have had the KN Typhoon V2 for almost 4 years now. I also live in the deep south, commuting 80+ miles a day (half of which are in traffic) and we've been having 95-100 degree days lately. Don't let all the "heat-soak" stories scare you.
If youre looking for lower temps, the best possible power, AND don't mind the extra work/$$$, any CAI would be a good investment. SRIs in general will all perform a little "less" than CAI. Thats the rule, usually. But of all of them, the K&N is the better option. It sounds great, and still works great. You may only make a few extra HP vs what a CAI could do.
My only complaint would be how quickly the filter itself gets dirty, but I remedied that by getting a 2nd one, so when you clean it and have to let it dry all night, you'll have a filter to throw right back on!
Get a Hybrid Racing 3.5" CAI. Silicone beats metal intake tubing all day long. Lower IAT's.
Of course you'll need a MAP tune with it. Add a header and you'll be around 220whp depending on the dyno, but you'll feel the difference, especially passing all those 300 hp luxury sport coupes.
If you go CAI, I'd 2nd this. ^^^^^