The 737 service is fine. I have done it 4x's and have zero complaints. All segments were on the 800.

I find the service to be fine, take a book to read and enjoy the flight. Both cabins get meals. Hope this helps!

A side note to the Op. This board is full of FF who whine if the don't get a 757,777,. Yet, there is nothing wrong with the 737-800. I think the size of the plane and their ego go hand in hand.