Originally Posted by
chongl
You can find refurbished Mark III for $500ish once in a while. The Mark IV definitely is not worth the upgrade in my opinion, especially since they further bumped the price on it.
I disagree - I made the switch from M1 to M2 to M3 and now on the M4. Low light is even better, and the 4K video support is and excellent addition. If you sell your old one quickly, you can essentially upgrade for around $300 each release. Not a bad price to pay for the latest and greatest.