yeah, i have a visor pro with the sprint PCS springboard. it's pretty nice. it runs PalmOS - there are literally thousands of apps available for it, including SSH. i use it to access my e-mail (i read it from the shell w/ pine) more than i do the web, but it PalmOS does have a full TCP/IP stack and you're not limited to some bastardized "Wireless Web".
i think i pay around $45/mo for it, including the $5/mo for the termed "wireless web service". the $5/mo makes it so my voice minutes also work for data, otherwise i'd be paying the daytime voice rate no matter when i use it. i get like 2800 night minutes and 200 day minutes - i'm around a computer all day so it's perfect for me, i never run out.
i give the combo

- and for the best experience tack on one of those targus foldable keyboards, if you do a lot of ssh work.
