Ubiquiti's Ubiquiti EdgeSwitch 8 150W is a powerful managed switch that can be challenging to configure
Linksys' LGS552P is a PoE managed switch with lots of Gigabit ports and a bit of Layer 3 features.
TP-LINK's TL-SG108E and TL-SG2008 both provide enough managed switch features to satisfy the requirements of most small networks.
ZyXEL's GS1900-8HP combines the managed switch features a small network needs plus plenty of PoE power at a surprisingly low price.
Linksys has announced new additions to its small-biz switch and access point families.
Updated - NETGEAR's M4100-D12G switch can do a few tricks, like routing, that other affordable smart switches usually can't perform.