Honestly if you are not an overclocker or big game enthusiast and are going to ditch this in 12-18 months, you should probably go for something kinda cheap but reliable and sink that money into an SSD.
Microcenter has this : GA-B75M-HD3 LGA 1155 B75 for $65. B75 is the "stability" chipset that winds up in a lot of business desktops. You don't need to get anything fancy or performance oriented if you're not regularly pushing the system. Motherboards might make +/- 2% difference in performance. Not worth it.
If you don't already have an SSD though, getting one will definitely change your computing experience. We're talking <10s boot-up times vs 30-40s with a HDD (if it's a fairly clean build) and application load times that can be 5 - 20x faster than with an HDD.
Good to know that B75 is what I should get. You described my needs and usage perfectly. Thank you. I will quit worrying about upgrading.
