Some of the students at Mac.Rob and MHS place an unhealthy emphasis on the marks that they want to achieve, rather than the skills and benefits that they could gain out of high school. For instance, I've a friend who's aiming for commerce at Melbourne, but is spending hours and HOURS a day studying to attain a score of 99.5 or above. She's in year 11. Don't get me wrong - I have absolutely nothing against trying to get a great mark, but when it's not really needed and it comes at the expense of actually enjoying high school, well...
Granted, there are definitely students at Mac.Rob and MHS who don't harbour this mindset, but it's difficult to keep a healthy perspective on the VCE when a lot of your peers do.
Nonetheless, I'd still consider sending my kids to either Mac.Rob, MHS or VCASS... but only if they wanted to go!