I prefer [name_f]Talia[/name_f]. Since it is usually associated with [name_f]Natalia[/name_f] and [name_f]Natalie[/name_f], for which it can be a nickname, I presume that [name_f]Thalia[/name_f] could reflect [name_f]Nathalie[/name_f], which is an alternative spelling. Therefore, in this context, [name_f]Thalia[/name_f] would be pronounced the same way. I do think that [name_f]Talia[/name_f], and [name_f]Natalia[/name_f] and [name_f]Natalie[/name_f], look more attractive.