Pros: Compact, lightweight, fully portable with included battery. Fairly simple, easy configuration - should be familiar to anyone who's set up a home Wi-Fi router before. Latest firmware from CradlePoint supports more 4G USB modems.

Cons: Aging hardware, limited by previous-generation standards (USB 1.1 vs. 2.0, Wi-Fi 802.11b/g vs. 802.11n). Throughput limited to 6 Mbps due to hardware limitation (USB 1.1 modem port), only recently acknowledged on CradlePoint's website. Multiple "branded" versions make for confusing shopping: Newegg lists this as a PHS300, but I received a PHS300S (for Sprint WiMAX) in a box stickered as a PHS300CW (for Clear WiMAX). There are also versions marketed for Comcast (PHS300CC) and Time Warner (PHS300TW). Somewhat confusing compatibility: need to manually find and update to different firmware to work with newer modems and alternate carriers. Product description (both here and on CradlePoint's site) implies that 12V auto adapter is included - it's not, and it's an expensive (~$25) option.

Overall Review: Fortunately, this Sprint-specific PHS300S I received was easily updated to the latest "generic" PHS300 firmware, and now works fine with my LG VL600 4G LTE modem on Verizon. Just follow the instructions on this CradlePoint support page to *MANUALLY* update to the latest PHS300 firmware: knowledgebase.cradlepoint.com/questions/13 (Note: You can ignore the modem driver update unless you're using WiMAX.) Finally, this is the only CradlePoint router that offers built-in battery power, if *completely* mobile operation is a requirement for you. If you can live with being tied to either AC or a 12V auto adapter, though, the newer CTR35 seems like a much better, faster choice for a similar price.