Hi, I noticed you're in Indiana too, so I thought I would reply to your post. Personally, i wouldn't spend a ton of money to RF them again and at their height I would consider Regents. They don't have the install issues that the Frontiers have. Also, if you're interested in trying one out inexpensively, I have one for sale for only $75. I have another one too but I'm not sure I want to get rid of it yet. We're in West Lafayette if you want to see how they fit in them, you're welcome to come by if you're not too far away.
Good luck,
Gwen