Drip irrigation systems

We're starting up our CSA farm in Eastern Ontario (zone 5a) and we've been looking for a irrigation set up that works and is relatively cost effective. Has anyone used T-tape irrigation systems from Dripworks USA? We're not necessarily going with them since its based in California (quite a ways from us), but it would be nice to know if the stuff is reliable or if people have encountered problems with it.

Also, any suggestions for simple irrigation systems on a 1-2 acre section, being supplied from our well at the house (5 gpm flowrate) that's relatively cheap? We also have the option of doing stock tanks or pumping from a pond on our property. Suppliers in the northern states or in Canada would be best.