Quote: "Verbatim are the best"
Yes, Verbatim
are the best. If you want to sell them at gigs then I highly, highly recommend you go with Verbatim because you'll never get write-fails (well I haven't ever at least). Besides, if you rather get 50 high-quality CDs you can always make more if they start selling well. I assume you live in the UK so I dunno what your lives are like but here in South Africa, merchandise such as caps and t-shirts sell much better at lives than CDs do. Pretty dumb when you think about it but that's an SA consumer for you, lol.
Seriously, if you gonna make an investment in that many CDs, go for a brand you can trust. If it's too expensive, buy less. If it sells well, there's always next time.
Other ways to promote your band:
* You can also do a couple of tracks and distribute them under a Creative Commons Licence (There are different ones and some still give the copyright holder a certain amount of control over their work) on Jamendo (www.jamendo.com).
There's also the self-promoting route like having free web albums and having commercial paid-for albums, making music videos, etc ot top of your lives. Here's an example of a band who distributes stuff free online, but also has paid-for albums:
http://http://machinaesupremacy.com/
(Warning, the site may take a second or two to load.
They sell merchandise too (everyone's a sucker for merchandise). Their music's pretty good too (If you're into that - like me).
Anyway, just things to think about too. Maybe it'll be useful, maybe not, hopefully it will.
[EDIT] By "lives" I mean gigs, live performances, etc.[/EDIT]