i am a big, big fan of the orthodox study Bible.
the old testament is from the septuagint (more accurate than the masoretic text and the version quoted by all the first churches) and, for me, the size is perfect.
it is small enough to fit into my bag and to take to church, Bible study, on long train journeys, on holiday etc. etc. but big enough to have basic information on all the basic orthodox topics. it really explains orthodoxy well to those from other Christian traditions and it uses minimal jargon, so it is very accessible for people who do not have any previous experience of Christianity.
if you want a PhD in theology, sure, you will need to read more study materials.
when i have finished reading the OSB, i may also move on. but i think it's good to understand something at this medium sized level before reading (for example) all the homilies of saint john chrysostom or the ins and outs of tertullan and whether or not he should have been excommunicated.
so, maybe in 40 years or so, i'll catch up with all you scholars.
until then, where i go, my orthodox study Bible comes with me!