With such scopes, you pay for the optics and not the mount.
The 6" F5 scopes (find one with a 2" focuser), will perform better, but are a bit bigger and more expensive - not so much money left over for accessories.  Dob and minidob mounts are cheaper and tend to be more stable than tripod mounts.  Minidob mounts generally need to be set on a stool, bucket, or table.  With such scopes, you pay for the optics and not the mount.