I agree with a couple other posters that you should really be looking for a used 046/460 or 066/660. If you buy it right, you can play with it and bail out if it isn't making you all that excited anymore. If you buy a new saw that is fine if you know you will be using it for years and years. Selling a new saw after it isn't "new" anymore is going to beat you up in the wallet area. I have a 660 and a late model 066. Both are in good condition and I have about $1000 total in the two. ($600 + $400)
In reality, you probably don't need another saw at all but my guess is that MOST on this site have quit trying to rationalize saw purchases. If it is a hobby you enjoy, that isn't any worse than spending $2000 on remote controlled airplanes or $5000 on a train set in the basement. And I bet many here have other "vices" besides saws. For instance I have three tractors and live on 3.3 acres. Not a need, just happens. Start talking about buying an antique fire engine and then just "settle" for another chainsaw instead...