The newer ARP studs have an allen key so they may be installed/removed while the head is in place.
If it is a largely stock build either one is just fine. For higher power setups studs provide MUCH more clamping force and provide more accurate torque.
Also, the forst time the bolts are installed you are supposed to retorque them after several complete heat cycles. If they're being reinstalled you don't. It not a bad idea to retorque studs too though.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.
If you're so inclined I'm always more than happy to accept tips via PayPal. 
Tip Jar ---> 
|