My intention here is not to make this more complex, but a couple others to consider: Fun Factory Wave and Tantus G-Spot. The G-spot is slightly bigger than the Bandito and has a vibrator but does not have the ridges that several of your choices have. The Wave has the ridges and is bigger. I guess my suggestion is to make a list of your preferences (size, texture, vibration, etc.) and then prioritize them and select accordingly. You are looking at several good dildos and you would probably be happy with almost any of them.

Thanks for the responses. The Niagara sounds perfect, unfortunately I haven't been able to find it here (in Oz). Tantus toys seem a bit hard to track down and the current exchange rate is woeful. I checked out the magnum in the flesh today and it is quite stiff. Looks nice though. I had not considered the wave as quite frankly the lower ridges terrify me given my partner's enthusiasm (I don't think we use a whole lot of different angles though). Do women have prostates? Also I noticed today that the bullet in whatever tantus item I was looking at (the goddess) sticks out about half an inch, which might be uncomfortable for her. I guess if I am getting something smooth, then I feel it should vibrate because that would be more versatile generally, whereas if it were ridged, I wouldn't be fussed either way. The issue will probably be sorted if my partner looks at the magnum and says ew! it looks like it has jizz on it, in which case I won't be able to look at in the same way.