I have heard a lot of positive reviews on the TRS-25.
The one I ordered from ebay finally arrived today and I was pleasantly surprised to see that it had the hi riser mount included with it, even though the description and photo didn't even mention it.
I put it on the AK and I like it a lot, but I also found a TRS-32 from PSA that was on sale with a coupon for $44 shipped, so I am waiting on it to get here and mount it to see which I like better before deciding which to keep mounted.
I am saving for one of the cz evo3 scorpions that I think the lower profile trs-25 would work on that gun really well.