Which Swiss Pass to get

Hi, I will be traveling to Switzerland next month with my wife to celebrate our honeymoon, but since this is our first time, I would appreciate advice on what train tickets to get.

1) We are traveling from Paris to Grindelwald. Should I only buy a train ticket to Basel, then use a Swiss card to get to Grindelwald? It should be a cheaper alternative, based on what I've seen so far.
2) We will be in Grindelwald for about 3 days, but I think we will be taking trips to the neighboring areas to hike, etc. Would a Swiss pass be a good idea here? Or a flexi pass?
3) We leave on a plane in Zurich, so we would need to take a train from Grindelwald. Would the flexi pass cover our journey there?

Advice appreciated!

Thanks,
David

Just adding a few comments:

Day 1 - Train from Paris to Grindelwald
Day 2, 3, 4 - Grindelwald area (sightseeing, etc)
Day 5 - Train to Zurich, fly out of airport

Since this covers 5 days, I don't think the 4-day Swiss Saver Pass would cover it, but the 8-day is $100 more. Are there any other options? How much would it cost if we bought Grindelwald->Zurich train ticket separately?
Thanks!

Great! Thanks for the quick reply! We will probably go with the half fare card.

Quick question, we can purchase from Basel station as well I assume. The shipping to the US is expensive so we will probably buy on location.

Yes, it is available at larger rail stations such as Basel. Just make sure you're not planning to purchase really late at night as ticket offices may be closed then.

Do you think 30 min between arriving at the station to the connecting train will be enough time to buy the Half Fare pass? Or should I leave an hour in between?

Hi David,

Under normal circumstances, 30 minutes is definitely sufficient.

Thanks! I just bought 2 tix from SBB, but the pdfs do not show any train times...it just has * for the times. is this ok?

That's allright, assuming that you purchased regular tickets without a seat reservation. You can just use them for any train.