No experience with the Vortex, but I have a TRS-25 (mounted on a Weaver 1 0'clock offset, behind a Nikon P-22) - got a friend that has one using the factory HiRise mount - we've both been pleasantly surprised so far.
Both ours are mounted on 15-22s, but before buying, the more research I did, the more impressive it sounded - even found one review that dunked and slung 'em - the TRS-25 passed, many cheap red dots failed one or both tests.
A lot of folks are running 'em on larger caliber guns and shotguns with good reports AFA holding zero and durability.
If you get one, note they have the regular TRS-25 and the
HiRise version - it comes with a riser which will raise it high enough to allow co-witnessing.
The manual says the TRS-25 battery (CR2032) is good for 3,000 hrs. - one fellow verified that he's used the heck out of his over the last year, and is still on the original battery.
Don't know if you've seen this (I have one on backorder), but my next experiment is going to be with one of the new
Bushnell 1-4x Throwdown PCL scope.
First focal plane reticle, illuminated horseshoe / red dot reticle, and (non-illuminated) BDC, which does not change values since it's a first focal plane reticle.
$237 plus shipping from SWFA Outdoors, but they've not received their first shipment yet. I've seen (and handled) one in two Walmarts so far ($299).