I like to use ARP bols as they tend to have a smaller hex head. Stage 8's are great as well. As far as removal goes, do it cold, spray everything with a good penetrating
oil the night before and the best open end I can recommend is the Snap On flank drive. They are quite expensive, so I bought just the the sizes that we tend to run into on the cars that we service. It may be worth the 20 bucks to not have to drill anything out.
Andrei