Ummm maybe I'm spoiled... I've been using Mepis linux lately, and on hearing good things about Mint, I decided to give it a try. I was a little annoyed that my GAG install was overwritten by default by GRUB during the Mint install, without even any choices possible.
A simple interface in the Mepis install allows you to PICK WHICH PARTITION to put grub on... The MBR, or the root of the partition you have installed Linux on. The advantage I've found in the second option, to install to the root of the linux partition... is, one, that you can easily image the partition, then replace it later, with bootloader intact, thus simplifying testing a new distro, then going back to another if you like.
I use a wonderful program called GAG to pick which partition to boot from the MBR. It has many options, including booting just about any operating system on any partition, and including password protection at boot level, all in an easily configured interface.
I have messed up a mepis install once, overwriting my GAG, but then I found a GRUB installer in Mepis after it rebooted that actually allowed me to reinstall GRUB where I like it. I didn't have to research online and go to command line and hope I didn't make a typo, I just pick from the simple graphical interface Mepis comes with. Install Grub... MBR? or ROOT. With a short description of each. what a wonderful idea! I feel this is a large shortcoming in your distro for beginners use. Many people will dual-boot windows and linux before committing to only linux. I still can't get my webcam to go in linux, nor can I get the accelerated video drivers for many motherboard onboard videos. Windows is still the only option for a lot of things. I once knew a guy who ripped out his video card, bought a new one, bought a new sound card, bought a new modem... all to get linux to work. Boy was he ever devoted! Devotion beyond what 99.9% of people out there have! For the rest of us, people need options, and they need it to be easy or they won't even be bothered with it.
All that said, I'm liking lots of other things about my Mint experience, it beats Mepis in looks hands down, and it seems quicker, more responsive. There are a few really great new alternatives to M$oft, they just keep getting better, and this is definitely one of the best! Many thanks to the developers for a wonderful Distro.