Well, I've tried their twin blader and their 4 blader and I don't like either one. They also have a 6 blader, but I've never had good results with anything that has more than 3 blades, so I'm not wasting my time/money on it. I was hoping I'd like the twin blade as I really like using my Atra with Personna carts...this would've given me another twin razor to use, but it didn't work out that way...I canceled my account with DSC this morning...someone said the DSC twin carts were made by Dorco...I believe it now as I've tried their twin carts before and I didn't like them then either...