From 1994, Quinta do Noval Nacional. Plenty of great Ports from that vintage but the Nacional is a possible GOAT.
As for the La Tache, it may be a good price for the bottle, but not a good price for the wine. If you are asking, this is serious money for you, and the chances are that the wine ranges from mediocre to good. You can buy cases of a better wine. My son was born in 1994, and we open a Mouton 1994 every year on his birthday. It is delicious now and will stay there for at least another dozen years. And for the price of the La Tache, you will be able to buy a case and follow it. And there are plenty of other similar great wines.
1994 is a fantastic year for Napa. Other than Screaming Eagle, you can get 3-12 bottles of the best wines from that vintage for $5K, and they should be at a great age now, plus the styling was more classical in 1994 than in 2001-present. Harlan, Dalla Valle Maya, Dominus, Colgin Herb Lamb, Ridge Monte Bello (not Napa of course), Opus One, etc. etc.
Of course, it’s your money and your birthday, and you should get what will make you happy.
[Penfolds Grange is another one you could consider. Looks like $725 for the 1994, probably less if you can find one at an auction. Should be good, on the younger side, now.]