What I appreciate is that it's been very simple so far! It has also helped me understand my own business better as well; where we are doing things effectively or not at all - which leads us back to this tool again (and again!) As you can imagine, there have been some challenges along the way but they've always had great answers and feedback from our team members when something does come up.
We're still learning how everything works together but overall so far it seems pretty good! Not much yet because we haven't done anything too complex either though. If your looking into analytics within an eCommerce site then definitely look further into what Totango offers beyond just tracking sales / conversions etc. They do offer more advanced features if needed however these don't work perfectly right now i believe due to certain plugins conflicting? Also make sure you pick someone who knows what he/she is talking about before going down.