A Ferret should do the trick.
If a Ferret is an option as a scout VTOL, then a Ferret is the answer.
I frequently field the Armored Ferret "Wild Weasel" variant.
It's a 15/23 for 103 BV. With a 3/2 pilot it's 156 BV. 2/2 pilot at 181.
If you aren't worried about having extra armor the standard Ferret is only 58
and the cargo is 17BV.
The Ferret is CHEAP.
It's only real problem is that an official mini has never been made despite
how long it's been in the game.
On a few rare occasions I've used the MG to wipe out infantry platoons to
eliminate the OP's cheap spotters. It's risky but moving at top speed makes
it hard for most infantry to hit.
One time I knocked a Phoenix Hawk LAM out of the air with one that was
teamed up with a Warrior C variant. The MG hit just happened to be the
last point that made it crash.
LAMs are really expensive to improve the skills on. VTOLs are MUCH cheaper.