Which boyfriend is right for me?

Please help me with a dilema: I have been dating Jack (guy #1) for several years. We have lots in common and enjoy each others company, however, we do not communicate on matters of the heart very well and we have no physical relationship. We barely even kiss. About 4 months a go, I met Ben (guy # 2) and started seeing him. I had to stop seeing Jack. Ben and I have a terrific time together, great physical relationship and decent communication but I do not have as much in common with him as I do Jack. Recently, Ben put our relationship on hold because he feels like he is not getting full committment from me. Ben is in love with me and wants me to move in with him (so does Jack). I still have feelings for Jack and have not completely broken it off even though I hardly see him. I'm just not sure which guy to go with. I'm really scared of completely committing myself to Ben because I would feel sorry for Jack. However, I really miss Ben and feel sad that Ben does not want to see me right now. Meanwhile, Jack is doing anything he can to salvage our relationship: (seeing a shrink, trying to do things for me etc...) How do I resolve this or who should I go with? Advice?