Id go with the jetta trek you posted, a new clutch kit, seals and shift.linkage rebuild will cost less than $300 if you do the work yourself, and the rest of the car seems to be well taken care of.The 2.0 is very dependable and easy to maintain add another $200 in preventive maintenance and you have a solid good looking car.
the turbo will be buying someone else's headache and will spend most the time not running.
VR6s are nice but harder and more expensive to maintain and looks like it was owned by a boy racer.
The original Jetta you bought probably has more hidden rust under the hideous rattle can paint and once you put the money into a used transmission, clutch kit, tires, and maintenance parts just to get it running you'll still have an ugly rust bucket that cost you more time and money than the well taken care of Trek.











