@djtl1218 NV and thermal both have strengths and weaknesses.
NV
pluses- Cheaper. Easy to identify the target once spotted. Easy to see obstructions.
negatives- Harder to spot the target. Moving targets are more difficult to stay on and tend to pop in and out of view. Follow up shots on runners are very difficult/impossible.
thermal
pluses- target animals really stand out. Following critters before and after the shot is a snap.
negatives- high cost. Target id takes some time (primarily looking at movements and shape to id). Obstructions like small branches likely won't be seen.
On either you are looking at a 2 dimensional screen. Which makes range estimation and identifying animal size difficult.
ETA- I believe thermal is well worth the cost. I own and use both almost daily. I prefer to shoot with thermal but wouldn't give up my NV scopes. Thermal shines in detection.