All great suggestions, but people never seem to mention Jack Herer.
In addition to winning a ton of awards, I've read that this strain has been officially recognized as pharmaceutical weed by the Dutch.

Sensi Seeds Jack Herer is a nice one, but lots of breeders offer Jack Herer for a variety of pricepoints.

Vision Seeds probably has the most affordable one.

All these strains are fairly balanced for both mental and physical effects & no knock-you-out couchlock.

You're welcome to check them all out on our site (Rhino Seeds), but we don't ship to the US - sorry.