Reputable Joomla Migration Services Provider - Joomla! Forum - community, help and support

our website running joomla 1.5 , planning migrate joomla 2.5.6 of reputable , reliable migration services provider ,can body here advice on available reputable migration services provider justifications please???

you review site http://resources.joomla.org/.

also, post request in forum professional development services (http://forum.joomla.org/viewforum.php?f=177).