It looks like we may be having a problem with wants v/s needs here.
If there is a genuine need for such a car, like a job that requires you to transport high end clients that would be unimpressed & so not do biz with some one in a cheaper car, then Joe has the right advice.
If the car is only to build ones ego & impress the neighbors, then lease/finance will be a fool & his money are soon parted.
It is concerning that there is a blanket limit of $700/month, makes one think that it could be a case of ones ego being bigger than ones pocket !
Apart from the sort of situation describe initially, if you are burning a car every couple of years, you may be considering the wrong models. Best get something that does not have the built in longevity. Go for something that will give the cheapest total running cost with the required reliability over the few years you plan on having it. Probably a 4 cylinder ricer. As the OP has stated, he doesnt have the money to pay for the car anyway.

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving