1. Billow V3 Plus or GeekVape Griffin 25mm,which one to buy ?

2. About Griffin 25 RTA
Griffin 25 RTA is launched for ages, it is the latest RTA tank by GeekVape , features two versions optional : standard version and top airflow, 6.2/6mL eJuice holds, 17mm build deck, Clicking-Clock Positions airflow control and so on.

3. Official Feautures Available for single or dual coil
6.2ml juice capacity for standard and 6mL for Top Airflow
Chimney width : 9mm for Top Airflow RTA ,7.5mm For Griffin 25mm standard
Clicking-Clock Positions airflow control
Top airflow with travel-to-the-coil structure (Top airflow version)
510 threading connection
25mm overall diameter
Hardness of SS316 set screws at 55-58HRC by 1200℃ Nitrogen surface treatment
Peek Insulator raw material made in USA
Silica Glass Tank: High-temperature resistant, excellent acid resistant

4. Best site to buy Griffin 25 RTA
Griffin 25mm has out the market for ages and now it is in stock and avaiable with best price ,you can buy it right here :

5. Billow V3 Plus
The Billow V3 Plus is the latest tank from EHPRO & Eciggity ,features 5.4ml eJuice , Quad 4mm Diameter Wick Holes,2 Adjustable Bottom Cyclops Airflow Holes and so on. And there are two colours optional for Billow V3 Plus Tank : Black and Silver.

6. Official Features 25mm Diameter 5.4ml Tank Capacity
2 Post Velocity Style Deck
18mm Diameter Build Deck
2.5mm Diameter Post Holes
PEEK Insulator
4.5mm Diameter Airflow Holes
Quad 4mm Diameter Wick Holes
2 Adjustable Bottom Cyclops Airflow Holes
Top Fill
Juice Flow Control
Wide Bore Delrin Drip Tip
Rebuild & Rewick Without Emptying E-Juice

7. Where to buy Billow V3 Plus RTA
,genuine one,with hard to beat price.

8. Comparison
1. 25mm overall diameter . 2. RTA Rebuild-able Tank Atomizer threading. 4. two colours optional : Black and SS. 5. Peek Insulator. 6. Wide Bore Delrin Drip Tip . 7. Top Filling 8.  Airflow Control supported. 9. came from famous team with a good reputation.

9. Different
1.came from different team. 2. eJuice capacity : the Griffin 25mm RTA with 6.2 and 6mL e Liquid holds,while the Billow V3 Plus with 5.4mL. 3. Billow V3 Plus RTA has a 18mm build deck,the Griffin 25mm is 17mm. 4. GeekVape Griffin 25mm with Clicking-Clock Positions airflow control ,the Eciggity Billow V3 Plus has Quad 4mm Diameter Wick Holes,2 Adjustable Bottom Cyclops Airflow Holes. 5. Billow V3 Plus supports Juice Flow Control ,has 2 Post Velocity Style Deck .

10. 6. Griffin 25mm RTA uses Silica Glass Tank : High-temperature resistant, excellent acid resistant 7. Griffin 25mm with two versions optional. 8. Griffin 25mm RTA by GeekVape is available and on sale,while the Billow V3 Plus is incoming and will be avaiable soon

11. Summary
So,IMO,if you want buy a RTA tank with massive liquid holds,then buy Griffin 25 RTA, but if you want buy a tank with more powerful features,then you can wait for a moment to buy Billow V3 Plus.