Where are you located? If I remember correctly, heart internet is a UK company and hostgator is in the US...so you may want to pick just based on location. I've heard some good things about both of them and both of them should suit your needs.
Just remember that HostGator don't back-up your website (via the offsite weekly backups) if you go over 20 GB of disk-space, so be wary of that if you plan to use near (or over) 20 GB of space (And, of course, using more than 50,000 inodes will mean your files don't get backed up at all)
Thanks for the reply, yes I did end up going with hostgater (changed my mind again lol), as they seem the better one out of the two for running the arcade scrit, just was'nt sure before becouse of the post's I have readed that said, try to stay away from hosting companys that say you will get unlimited disk space etc, when this is just a myth, Thanks again for the help and input.