Hi Everyone Please Help Me Out

[James96]

Hi people im new to the world of saltwater tanks but not new to the world of fish keeping have had tropical fish for about 8 years and i wanted to make the step into saltwater  ,
 
I was thinking about getting the boyu tl 450 or its big brother the boyu tl 550 any recomendations on these as starter tanks, or indeed any tanks that are suitable for a beginner, oh and also that are not that expensive.
 
Thanks
 
James