Buy-in limits relative to blinds for NL Holdem

[LSW]

I currently play in a Holdem home game that is NL with $0.25/$0.50 blinds and a max buy-in of $25. We have found that the blinds are not too small that people are in every hand and the max buy-in does not scare off any of my friends that do not have a lot of scratch. One friend (who I feel is pretty knowledgable about poker) said that the max buy-in should be bigger, more like 100x the big blind ($50 in this case). I just played at the Aladdin last week and they had $1/$2 with $100 max buy-in which is equivalent to 50x big blind like our game. Any thoughts?