I can get an SPI firewall for $80 (e.g. linksys), or something for $300 (e.g. sonicwall TZ 150). I am not interested in using VPN, virus protection or subscription service. Is there any reason to buy the $300 firewall?
This is to be used with DSL, so I need both firewall and NAT functions. My old sonicwall (soho) has a speed limit of around 1.8M/500K while my DSL actual limit is 2.8M/700K.