<< . . .VWs have really been holding their value in the last few years. Just look at the price of used Jettas and Passats. . . >>
That's only because they're extremely trendy as new cars right now. That drives up the resale value immensely. I don't think their quality is up to par with the other German cars available here yet, namely Mercedes and BMW. Look at the latest owner reviews on carreview.com. Many negative comments (paraphrased, I suggest you look for yourself) such as "looks great, when it's in my driveway, instead of the shop," and "I've had my VW for 10 months and totaling service receipts, it's been in the shop about one month," and "service department always booked solid for a week in advance" don't make me think that the trend will last much longer.
<< Preludes take super or 91 octane only. I believe it is the same for all their VTECs. . . >>
True of the Prelude, not of the Civics. The (US) Civic EX and HX each have different VTEC engines, but are designed to run on regular fuel.
Anyway, I like the Civic. I am a longtime Honda fan. You won't go wrong if you prefer the Corolla. I assume you will have driven them both before you decide. Make sure you like the service department, because in the long run, they will determine your level of satisfaction with the vehicle long after you've forgotten the salesperson's name.
Good Luck! 🙂
EDIT: I should not have said the only reason VDubs are holding their value well is because of trendyness, I should have said it is one reason.