My suggestion for your budget, for what it's worth, cuz I'm poor. I would buy the Hogster 25 or 35. This way you can shoot it as a scope and experience what looking through your rifle all night feels like. Then, continue as a scope on your rifle or use as a scanner with night vision scope until you can obtain a thermal scope as an addition. Best of both worlds, because you do have a scope, until you can have both, then, the 25 or 35 makes a great scanner. Me, personally, can pan a rifle for a long time for 3-4 grand. I shoot the Hogster R35 and love it as a scope. If I ever go 640, say a Yoter, then, I've still got the 35 for a scanner. Hope that makes sense.