Maverick Wi-Fi keeps dropping!

iMac Version 10.9.4

Processor: 2.8 GHz Intel Core i7

Memory: 8 GB 1333 MHz DDR3

Graphics: AMD Radeon HD 6770M 512 MB

Worked perfectly fine before update to Mavericks, I've never had any problems with my iMac before this.

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Hello, I recently upgraded to Mavericks 10.9.4.. Ever since, I've been having tremendously annoying problems with my Wifi continuously dropping no matter what I'm doing, browsing or not. I've Google'd the problem, only to find out multiple people are experiencing the same exact issue, yet, Apple is not addressing the problem properly.

There seemed to be a variety of troubleshooting solutions to choose from, so I tried each of them. Unfortunately, none of them worked for me. I'm desperate at this point, and I really don't want to rollback my system.

I've tried nearly everything in the below link, with no success (I don't use iCloud and I can't disable Bluetooth because of my magic mouse and keyboard)

How-to Fix OS X 10.9 Mavericks – Wi-Fi Issues – How-To Apple

(My Wifi is WPA2 Personal protected if that matters)

My mother's iMac isn't updated, and it doesn't have problems with disconnecting (apparently hers still disconnects, but not nearly as often as mine - mines every 30 seconds or so, hers is rare, but it happens)

I've

-reset my PRAM/SMC

-Set service order in Network settings, renewed DHCP, deleted my network, changed locations, everything. Nothing in the Network settings helps whatsoever

-'Caffeinated' the terminal

-Turned off 'Wake for network access' in Energy Saver

-Deleted 'SystemConfiguration'

-Restarted/shutdown my computer multiple times

-Started in safe mode

Sometimes my Wifi will stay up for a good 5 minutes (very rare), but most of the time, it goes down every 15-30 seconds. Apple, honestly, what are you doing releasing something this unstable?

Sometimes when the wifi drops, it just disconnects from the network (i.e, I can scroll my mouse over the gray wifi logo, and it shows the networks [wifi is still "on" but not connected to my network]) and other times, the wifi shuts off completely (i.e, I scroll my mouse over the gray wifi logo, and it tells me to turn the wifi on).

I'm sooooo desperate, there's nothing that's working for me and having the wifi constantly drop is one of the most irritating things when you're constantly trying to do things on the internet.

Any solutions? Thank you!