I picked up my 05 NA2 in April and have loved it since. I was in the market for either a 996TT, possibly 997TT and GT-R - the NSX at the time, was actually a distant option.
I had the opportunity to test drive a GT-R, and as can be agreed, the performance is incredible. Bang for buck performance, there is zero competition. I loved the drive and it made me consider one that much more. I have also taken rides in 996TTs on the track, and they are great cars too.
Along came the opportunity to buy the NSX from a friend selling it at an amazing price. I've owned Hondas all my life and I know what they're all about. I also knew of the car before hand and had a good idea about the condition, maintenance, etc. Basically, it was mint, low-mileage, essentially stock example of the final production year.
The value of this NSX was enough to sway me away from the GT-R. I had also decided at this point that I wanted a 997TT if I went Porsche, but they were out of my price range. I didn't even take it for a test drive (roads still had snow) before making the purchase.
I've not regretted it since. I completely agree with the adage "if you have to ask how much it costs (for GT-R/Porsche maintenance), you can't afford it". The NSX is the perfect package for me. The initial costs, the cost of ownership, the performance, the reliability, the efficiency. It all comes together in a car that worry free, rare/exotic, looks incredible and has F1 inspired performance. While I was blown away by the GT-Rs raw performance, big horsepower and displacement were never something that impressed me. The lightweightedness and incredible chasis design more than compensates for the (rated) horsepower of the car.