I have a Lola Jake I use with a harness and it works very well and looks and feels very realistic. Be prepared to spend some money on it though. Also, the bigger the more expensive. I can't imagine packing with it though because it's so big and heavy. I wasn't sure about the pleasure knob at first and if it would really stimulate well, but it works very well.
I have been thinking about a Vixen Creations as a back-up though. For those with one does it stimulate you well? Can it just stimulate your mini penis instead of having to use something else (like a vibrator)? Whatever choice I do not want something that inserts into the V hole for stimulation. I am done with that and don't want anything stimulating or going up there again (except for medical reasons).