well i have had one of those 40% coupons the last two weekends and none of the stores i have gone to have had them...hmph!
i haven't knitted anything in the round yet (honestly the instructions for the projects i like make my head hurt with all the abbreviations...lol) but i knit almost everything on circs. I have a few sets of flex shaft bamboos that i like as well but the biggest reason i like the circs is that i don't have to figure out where the needle fell to when i do drop a needle. the flex shafts are great too though because you can slide the work down to the flex part when you quit for a time and the work is less likely to fall off.
just gotta find a store that wants to sell me some interchangeables at a price i wanna pay!