The issue I see with using a "pop-up" vent with a drop-in range is the room both units consume under the countertop.  I was amazed at how much space our "pop-up" took up when it was installed.  I wish there had been an alternative for us.  If the storage space under your proposed island is critical, it may be a deal-breaker.  If you have plenty of other storage options so you can afford to lose the under-island space, the "pop-up" is a nice alternative.  We really like ours, have had it for about 5 yrs, no issues.