In my personal experience, the best cure for GAS is to not compromise. Just buy what you really need and want, and be happy ever after. I've wasted a lot of money on the detour to what I wanted in the first place.
I always shot my Oly XA little rangefinder until I wanted some more versatility. Instead of buying that M6/7/P that I really wanted, I first got some ****ty Zorki-4, then immediately after a CL to save some. And while that CL was a fun little camera, I still would have liked the better rangefinder of the M6/7/P family, so instead I bought an M4-P. Which is a great camera, but it didn't totally kill the lust for a measuring variety with higher shutter speeds, thus keeping gas alive.
Same with my digital route: I really thought an M9 would make me happy. But I bought a digilux-2. Which is a great camera, but it comes with a small sensor and evf. So I soon upgraded to an X1 with a much better sensor and fixed lens. Which kept the lust alive for more flexibility, so of course then the M8 entered the house. To save some. And bought some more lenses for it. To upgrade those to better lenses soon again. But it still had that little crop factor problem, keeping the M9/MM/M the more desired upgrades ahead. So I finally bought an M9 too.
I should have realized that I'm not rich enough for all these detours and should have bought what I wanted in the first place: an M6 and M9 set and kill the unhealthy shopping distractions.
Then, the internet and its photo gear jerks are a safe place again. 🙂
That is some good advice - if you know what you want, just buy it and don't compromise.
But if you aren't sure what you want or need, then what??
You must decide which cameras and lenses YOU want and need.
The first thing you must do is disconnect for a while from anything and everything that tries to get you to buy new cameras and lenses. Avoid camera websites and camera magazines in particlar. Avoid camera club commandos and camera store sales people. How else can you decide what camera and lenses YOU want and need for your particular style of photographing and your subject matter rather than what cameras and lenses THE CAMERA COMPNIES and camera salesmen want you to buy?
When people are being screeched at constantly to BUY THIS CAMERA by the advertising agencies hired by the camera companies, it's no wonder people get confused and buy gear that doesn't work for them (inbedded in the message is the thinly veiled implication that your current camera is inadequate, obsolete, can't produce quality images or is an "amateur's camera").
People usually get GAS for a camera or lens because of advertising, not because of their own well reasoned decisions. They don't think their impending purchase through; they get confused or dazzled by the advertising and make an ill considered purchase. After a few weeks or months, they realize that the new camera is not what they truly needed - and then they are stuck. Their options are: Trade it in and get 1/3 of what you paid for it or sell it outright and get 2/3 of what the new cost was (IF you are lucky). You were confused by the ad agencies. It cost you money that you didn't need to spend.
Guess what: The camera maker is happy - they got what they want (your money). The ad agency is happy - they got paid by "CaLeiKon." Does either care if the camera you just bought is a good fit for you and your photography? My guess would be no.
Get away from the nonstop advertising. Clear your head. Ask yourself some questions. Look at your most recent photographs; figure out exactly what your subject matter is and exactly how you choose to photograph these subjects. Once you figure out those issues, ask yourself what is the best camera and lens to pursue your particular photographic passion.
That's how you end up with the right camera and lens from the start - and save yourself alot of money, heartache and frustration in the process.
JMHO, based on personal experience -
and a stint working behind the sales counter in a camera shop.
😉