Pavel, if you were looking at concierge to be a meal replacement, it really isn't. You could definitely get by with having breakfast each morning in the lounge, but after that, it's really just snacks and appetizers. A great feature if you're hanging around the resort in the afternoon and looking for a cold drink, or an in between meal. There's many other benefits to consider, like the assistance of a pre-planning staff for all your PS's, entertainment, recreation, special celebrations, etc., private check-in, a secure building or floor, food offerings, package delivery, daily on-site assistance, upgraded amenities in the room, automatic turndown service and probably a few others that I'm forgetting.
As for getting opinions on these boards, all Disney resorts run 24 hours a day, 7 days a week, 365 days and see millions of people come through their doors each year. You are definitely going to get a split of those that loved a particular resort, or had a disappointing experience. Ultimately, you need to decide what's best for your families vacation.
I hope it's a great one,
Tammi