What a coincidence - am I local and played the Summer Course at Winter Summerland today.
In order of difficulty, I'd rank as:
1. Fantasia Gardens (Fairway - par 72 if I recall)
2. Fantasia Gardens (Garden)
3. Winter Course @ Winter Summerland
4. Summer Course @ Winter Summerland
I play golf every Sunday. I am no pro, but I find the long course at Gardens aggravating. It's not easy! But they're all fun.
You can play a round at Fantasia, then go play at Winter Summerland for no charge the same day with your receipt (and vice versa). If you have an AP, it is half off every day, as well. The courses at WS are shaded, so are nice. Not too much shade at Fantasia, so would not recommend going at a peak heat time of the day. Wait times can vary. Today, we waited for about 5 minutes at 11am, but have previously waited for about 20.
FORE!!