I bought a set from canadian tire, i've bought their mastercraft brand and I've bought dremel brand. the dremel brand bit broke within a few seconds, which really sucked because I had to get a different sized chuck for it. the motormaster ones were -OK- and got the job done, but wore out after two holes. I guess if that's all you need, that'd be fine.
I've been pondering on getting the set from lee valley tools:
http://www.leevalley.com/wood/page.a...30,43409,43425
the mastercraft worked for me. It was a 6pack for $26.99. I used them for drilling 2 10gal tanks. for the hassle of it, i'll bring my next project to a glass shop for them to do...cost less in the end of buying bit after bit.
oh, advice! be patient with the bit and use LOTS of water at mid-high speeds. I used flexible airline tubing syphoning from an 11L jug, tied a knot in it to reduce it to a small trickle and taped it to my dremel right by the bit.