Im going to say: do it, go for a bridge port.
Since I've had a bridge port running I can provide some truth to some of the things you've heard or read about.
The breakdown, my interpretation:
The Brap: Of course this is one of the greatest things about BPs. You might find yourself letting your car idle more than normal. And Purposely driving in high traffic areas, just to hear you car idle more. You might find yourself sitting at a stop sign in the middle of nowhere...you guessed it, just to hear your car idle.
The power & drivability: Once you get over listening to the idle (for the moment), its time to take off. The low end (anywhere below 3k-3.5k rpms) will suck and drive you mad. You will hate driving in traffic. Starting off is tricky, especially on a incline.
When cruising around, you'll find the rpms at 4k comfortable. Cruising below that? No. When its time for fun and to get your car anywhere quick, put the pedal to the metal. At first if starting at low rpms it'll be like "yeah whatever". Then once the rpms hit 5k and up it will be like "Whoa! Yes! HaHaHaHa!" Then you shift into the next gear and repeat that last part.
Gas mileage: It will suck. 12-15 mpg. That is all.
Flames: Yes Flames. Out the exhaust pipes. On command.
Reliability?: I cant say much on this cause my motor ate a coolant seal pretty quickly after the build. But I can imagine that a bridge port motor can be built to last. Just be very careful building it.
Other notes: Your engine will run hotter. And it will warm-up quicker. And will rev quicker too.
I think that's it.