I have stayed at both Lauiula and Joelans in the last few months so I can comment on both.
I love Lano beach, you are on the right track, just have to decide what is best for you as regards the Fales.
Joelans provides the most food for your money and so is very popular with the backpacker crowd, I cant fault the owners hospitality and desire to please.
Both places are a slightly different experience and I would go back to both.
Being in my 50's I have to say if I had to choose just one I would choose Lauiula.
In my opinion they are slightly more professional and consistent in their service, quality and cleanliness.
But a lot of younger people would say their favourite would be Joelans because the food is Buffet and includes lunch and of course the price is 20 tala cheaper
For me, I like that Lauiula has hooks and shelves in the bathroom, that the dining room has a tile floor , clean table cloth and there are no dogs allowed in, also having a bar on site is nice.
If you need to know more you are welcome to contact me direct, I have spent over 3 weeks at the two places they are amongst my favourite in Samos