I'm currently looking at buying another A3 in the not to distant future however, I have a few questions... (apoligies as it's a bit long winded) DSG & DSG S-Tronic, whats the difference? As the BOSE sound system is enough for me, would I be better finding a car with it already fitted for ease of fitting and cost? Also, I' will eventually want to install the RNS-E. Again, will I be better finding an A3 which already has double din HU fitted and will this work ok with the BOSE? Is it worth going for the 170 and/or quattro? (I understand that the MPG is slightly effected with the quattro) Has anyone any experience having a 3 door and kids? I'm leaning more towards the sportback for this reason. If anyone comes across a one for sale, please post link Would like Misarno red, but not essential. Many thanks for your time.