It's that time again! Jim Cramer rang the lightning round bell, which means he gave his take on caller favorite stocks at rapid speed:

XPO Logistics: "I don't know. When you own XPO, you just have Brad Jacobs [CEO] on it. The stock was dramatically lower, they reported a great quarter and the stock has gone higher. Now it is resting, but I do like it. I think the business is very strong. Jacobs gave us some real good insight."

JetBlue: "I think you hop on the flight, you have a really good time. You watch TV, and then you don't buy the stock. This stock to me does not offer a lot of upside. And that group is very, very painful."

Apple Hospitality REIT: "That's become a crowded space and it doesn't have that big of a yield. If you want to have real estate investment trust, I'm going to send you to Federal Realty or Ventas."

Synergy Pharmaceuticals: "I don't think that Brent Saunders [CEO of Allergan] is going to buy them ... Look, it's had a good run. It's almost doubled. I would say it's for speculation only. Remember, it can pull back. It's had such a big run."

GNC Holdings: "What to do with GNC? They probably ask themselves that every day at GNC. This stock has been absolutely horrendous. I still won't touch it until they clean up and have a good quarter."

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