05 Mustangs For 10,000 Dollars OK. Purchase A 99 Mustang Cobra Or 05 Mustang GT?

OK. Purchase a 99 Mustang Cobra or 05 Mustang GT? - 05 mustangs for 10,000 dollars

The 99 Cobra has been done to follow up the work because
Cold Air Intake
Magnaflow Exhaust -H-pipe/full
-Piers
4:10 Arts
Repainted the original black paint
Smoky connecting rod bearings recently replaced, the engine is very smooth, but the exhaust is a little white.
"It has 70k miles
Cost only $ 10,000

And the 05 Mustang GT for most stocks, and is probably the cheapest model I found that I was a student with a part-time-bin job.

V8 24 HP vavle/300 / horses less than 25 Cobra
More recently, car / less chance that the necessary repairs and downtime
"The cost of approximately $ 17-19K

I guess my question is if I stay with the Cobra 99 for the lowest price I can maintain a return car.Its most and theres a better chance to guess the mechanical problems, but I will save more than $ 6. What is the reliability of this Mustang Cobras?

A Mustang GT or newer with fewer miles, fewer horses on the same MPG, may be more reliable but more expensive.

Any help or share experiencesEC, these cars would be more than grateful!