First off, what size comps are you talking about? 13cm speakers can work well, but 16.5/17 cm comps will give you a lot more kick or midbass. To get the best from any speaker, you need to fit it well, and look into using some sound deadening.
One of the most important aspects of installation is SOLID mounting of the mids, usually on a good thick MDF baffle. As for good ones, it's all down to personal choice. I run genesis, but there are loads out there, and you get what you pay for.