Both are good units. Both require a bit of networking know-how to get going. It seems like you know enough about networking to read a few websites.
I have not used an Edgerouter Lite but it does have some cool traffic monitoring stuff inbuilt where you can have pretty graphs.
I actually up-voted the Mikrotik because I have one, and it has been rock solid. I have got a RB2011 but the RB3011 unit is out now, and its dual core and a lot faster than the RB2011. I think the edgerouter lite is already dual core and has a decent CPU. If you buy a router, get a dual core one especially if you have a lot of clients connected to it or have a 200Mbps+ plan.
But I got a VDSL modem in bridge mode, and when I can get UFB I just get rid of the modem and plug it straight into the ONT. May have to alter the .1q settings, but the unit has been solid. I think its been up since I moved house about 7-8 weeks now, solid unit.