For IR emitter kit - your best option performance and value wise would be the
3Dtvcorp emitter kits.
There are 2 New kits that work best for our TV's.
Superclear Model U Glasses & with Gen2 emitterhttp://www.ebay.com/itm/160609124777...84.m1423.l2649
This kit is universal, and the emitter is compatible with almost every type of IR glasses, so if you ever think you may get into 3D more and want to test different glasses for quality / hobby then this is your best option.
Samsung 3rd Party Kit Model SA3 glasses and emitterhttp://www.ebay.com/itm/Samsung-Mits...item2562ff55c8
This kit is a Third party version of the original Samsung technology and will work with all Samsung/Mitsubishi IR Glasses and 3rd party glasses made by other company's for Samsung/Mitsubishi TV's (but not the new 2011 blue tooth versions).
Based on your post you want to keep it simple, so your best cheapest bet is the Samsung 3rd party kit Model SA3.
if i were you, I'd get the Gen2 emitter/kit, it will work with pretty much any pair of IR glasses that you buy now, or in the future.
They have different combo packs , so get the one according to your needs.
I have the same TV but PN50A450 - I'm using a custom high power emitter made by the company and generic glasses, but I'm grabbing a few Model U's for upgrade. I use a PC/HTPC with ATI 6000 graphics and Power DVD/Arcsoft software so their is no hoops to jump through. Everything is in spec according to the TV's ability. no playback limitation etc.
I recently read a little about the VIP HDMI products , but don't know much about it ability's/limitation etc.
just remember we need a Source output of 1360x768 preferred, or 1280x768 or 1024x768 in order for the 3D modes to be enabled on these sets.
hope this will get you started.