Well, since I can help you, I will respond. Tamiya's sprays are generally good. Their primer - fine white - is one of the best you can get due to its even coverage and self-leveling properties. In some cases, for example just a white coloured piece, a couple of coats of the white primer will do the job. The rest of the spray lacquers aren't too bad. Their metallics leave a lot to be desired. Colours like 'Gunmetal' have large metallic flakes in them and do not provide a good finish, so I'd steer away from them. 'Silverleaf' seems to be their only metallic I'd use again. Their gloss black (TS-14?) is essential for good metallic finishes as it provides an excellent surface for reflective paints to go over, like Alclad II.
One of the other benefits is that they have a really good colour range as well. But you will probably want to use an airbrush eventually, so I would suggest investigating the possiblities there.