Dboi... I've grown some pretty good sativa leaning hybrids. There are many to choose from.
Short answer: Sugar Punch - Sannies Shop
Long answer: The question to ask is... how many weeks of flowering are you willing to take on? There are options at any length.
I like to use seedfinder to check lineage and see what I am getting. You can just google "plant name seedfinder" example: Northern Lights seedfiner. click the link that is seedfinder.xxx.ccc it will break down the lineage for you.
There are lots of bad choices in the seed biz... waaay more than good choices. I suggest coming up with your choice and posting here. Someone will let you know if it is a bad choice. Some seedbanks are scams or known to be unreliable... some breeders are known to put out junk or problematic genetics. Many breeders are coming out with little rep and the verdict is still out on them. I like to stick with the proven breeders, but, avoid the old breeders who with an established name have little to prove.
Here are a few to look into...
7-9 wks - most any of the C99 plants. Apollo 11. Others, I forget. If you have the coin try out Dr Greenthumbs c99. His seeds are a little more expensive but I've been very impressed with the results from Dr GT. c99 is speedy. Speedy effects and speedy flowering. The fastest flowering sativa leaning plant you will find. Easy to grow.
10-11 wks - Sugar Punch, Killing Fields - From SanniesShop. Great stuff... really great. I like Sannie too.. You can get on his forum (google it) and see people growing his seeds. There are a handful of active VERY good growers over there with REALLY nice cameras. Great people too. Sannie seems like very good people.
12-13 wks - Many Haze varieties... with killing fields and sugar punch, you'll prbly find one plant in the pack that takes 12-13 wks... Having haze in the name doesn't make it what I would call "haze". You can get hazes that flower in as little as 10 wks and beyond 14.
14+ - Jamaican Lambsbread - Never grown it but have smoked Columbian Gold and Lambsbread. This is a commitment, and a difficult one at that.. If you have not had 4-5 grows under your belt I would suggest putting a hold on this one. With 4-5 grows under your belt, be prepared for a challenge. And, lots of vertical space.
I would recommend Sannies Shop. I've grown the killing fields and love it. I've heard the Sugar punch is even better.. I believe it is basically Killing fields x Super silver haze. Those are two of my favorite sativa leaning plants.. I could only imagine (and have heard) the smoke is fantastic. If you made me give you one choice... I would say Sugar Punch. Super silver haze is fucking GREAT... but it's dependent on who you get it from. I got mine from Beanhoarder... his packs can be hit or miss. I searched through many plants to find my 2 keepers. With Sugar Punch... you can trust Sannies work... you get killing fields, which is fucking GREAT.. and, you get a good Super Silver Haze which is fucking great... I would go with that.
A common sativa that new folks seem to be pulled towards is Kali Mist. I would not recommend this pack. A partner grew it out and was quite disappointed. Also, I have seen many bad reviews... apparently, Kali Mist was reworked some years ago to make for shorter flower times and easier growth. The result was a plant that has little sativa-like effects.