What is your budget, hence what is "cost effective" to you? Also, what may be important is what is available to you locally...
Marantz has the NA6006, which retails (here in the US) for $700 - the same as your PM6007 and would match the looks of your integrated.
Primar has their new NP5 for $600
Bluesound Node 2i (my personal favorite) retails here for $550
Yamaha has the WXC-50 for $350
Depending on your budget, there are models from Audiolab, Cambridge Audio, NAD etc. Of course there are many high price models as well...