Yes I use a DSO 2100 and it works fine. Only real problem with the majority of the USB scopes are that they aren't isolated so they are low voltage use only. If all your doing is LV electronics then its fine.
thats all i really need one for. im not trying to work with the 110-220 VAC or the ignition coils kind of voltage. i think this one may be the one i am looking for since i will be doing a lot of LV testing and all that what not. what does this one run for?