I am looking to buy a copy of the English Suites, and need an urtext edition. Normally I'd just go to the music store and buy the book; however, they only have the Henle edition, and being a student, I don't really have to spend $45 on a book. Can you recommend any other good urtext edition?
Good quality Urtexts tend to be expensive... A quick check suggests that Henle, Vienna and Bärenreiter are all similarly priced while Peters is a little cheaper.
The Bach-Gesellschaft Ausgabe is an old Urtext whose quality, they say, varies a lot. According to Wikipedia the parts edited by W. Rust should be of good quality and it just happens that the suites are edited by him (althought there seems to be a corrected version available, too). You can get this (and the corrected version) for free on IMSLP. There is also a Dover book available which is quite cheap and contains a lot more (but at least my copy is impossible to keep open).
I've found new and used books at Amazon US (if that's your location) for ~$10 (Peters, Henle) if you go with half the suites (no. 1-3 or 4-6).
Searching for "Englische Suiten" appears to result in more hits...
I found an Urtext edition by an Italian publisher, also available at Amazon: here. I can't comment on the publisher, since I never heard or seen something from it before.
ABRSM (Associated Board of Royal Schools of Music) editions are generally reliable to work from, and somewhat less costly.