Always remember that use year has nothing to do with when you can make a reservation.
For the most part, use year means nothing unless you cancel your reservation at the last minute. If you usually travel in May and have a June use year, you could lose your points if you canceled at the last minute. This is because you would only be able to use your points through June because you are too late for any of the banking deadlines. If you had an April use year and had to cancel a May trip, you would have through the following March to use your points, 10 months more time. So an April year would be best for you now. But will you always travel in May? Your travel pattern may be a lot different in 10 or 20 years than it is today. So I say to usually not worry about use year.
If you REALLY want a particluar use year, tell your Guide or buy one resale.
HBC