Using a blower to dry will reduce the chance of marring even further. I had a jet black BMW years back and the paint was so soft that it would mar if I sneezes on it. The only way I could maintained it was with aid of a blower. At the end of the day, all blowers will do the job. Warm filtered air is nice in the winter months but honestly speaking... it not that much better than what you got (except for the 8HP one---its a beast). Just as long your vehicle protection is maintained, all blowers will make quick work of the drying process.
The other reason I went with the metro blaster was due to my dog groomers. They use them all day long and the pets were not afraid of it for some reason. I can dry my dog with it in less time it takes to write this paragraph. Now...Only if I could ceramic coat my dog. LOL