ok so just know this--i am not an expert but here goes. if you want lots of power and a decent sized car, (which i highly recommend for inexperienced drivers, simply for the fact that if an accident does happen, and they do, you are safer in a bigger car vs. a small car) you should look at something like a Pontiac Bonneville(they come with supercharged 3800 V6's that will smoke most anything on the road)and they are relatively inexpensive to repair because all GM/Chevrolet/Buick/Oldsmobile/Pontiac cars are. in my personal experiences i have had more than a few of them reach the 500K mile mark without any major problems.
of course if you really want to have fun with something large go for a chevy silverado or a gmc yukon--they dont have quite as much power but being able to leave the pavement has its own rewards too. my current chevy truck has 250K miles on it and is still like brand new, and my jeep cherokee just flipped 200K miles and is very fun for off-roading the downside is that 4 wheel drive is more expensive in maintenace and most of the time are gas-hoggs but the fun they offer is priceless at times, if you have a place nearby to use it.
but if you insist on a small car with lots of power and reliability go for a volkswagon jetta wolfsburg edition(i only know what the 5 speed is like-i assume the performance of the automatic is about equal)--before i say any more if you do get one of these i take no responsibilty for any tragic consequences.
these cars are made for the german autobahn. you can achieve 90 mph in second gear WITHOUT redlining the engine. after that there are 3 higher gears=insanity.
i'm not sure of the maintance or repair cost on them though because i've never owned any foreign vehicles but have borrowed many of them.
ok 1 last tip---if you live in the city and want something that will last, the further you go into the suburbs towards the wilderness, the better your chances are for this reason-most of the cars from "out there" have a better chance of having mainly "highway miles" and they are much less traumatic on a vehicle than stop and go driving that occurs with city driving all the time. the one exception to this rule is if you want 4 wheel drive--then i say go for buying from downtown any big city because most of the time you will be the first one to use the 4 wheel drive for anything other than on the road winter or wet weather conditions, and there really is nothing like taking something through the mud for the first time!
ok hope this helps somewhat and let me know what you decide on!