Hello. I am looking at purchasing a 3D PLA printer in the next 3-5 months and am looking for some help in choosing the right design. I have been researching 3D printing for quite awhile and am looking to buy a printer as a hobbyist.

The requirements I am looking for are as follows:
- PLA Printer
- Prints to at least 100 micron layer thickness
- Preferably dual extruder
- Affordable filament (non proprietary is a bonus)
- Printer that requires few upgrades to operate well for at least one year
- Few hardware issues
- Good software package a plus
- Works with Mac OS (preferred, I can bootcamp if necessary)

I do not have any experience with CAD, so I will be printing already completed renders. I am mainly looking to print thingiverse designs, and other interesting CAD files. I do want the ability to tinker a bit with print settings. The budget I am looking at is about $1,000 to $1,500 (not including filament). I prefer a decent bed size to print objects, but if a mini-size printer is significantly better in my budget I would consider purchasing it. Any help is greatly appreciated.