Gershman Grande Avant Garde

Some site says it is 89dB, but I think 87dB is correct.

I run it with Plinius SA102 class A 125WPC 

Power wise, I would suggest at least 100WPC, preferably a high quality 200WPC amp will do justice. On my setup, I could directly compare Gershman with Harbeth Compact 7ES-7 and Tyler Linbrook Signature Systems. Gershman costs over two times, and it clearly sounds better than those. I like its small size and light (?) weight. 

I don't have a direct experience with Luxman integrated amp, so I cannot say for sure, but from the spec, it will work fine.

Luxman's output is 110WPC on 8 ohm and Gershman is 6 ohm, so Luxman will pump a bit more power (150WPC?) to Gershman. 

However, if you have not purchased the Luxman yet, if I were you, I would go for an amp with more power, like 200WPC on 8 ohm.

I am sure there are many other $10Ki-ish speakers out there to consider, but  so far, I don't have any complaint on my current setup. If I have enough spare money, I'd like to try amps like VAC 450 with Gershman, but it is far from reach. I'd rather spend more time/money/effort on listening to music.

Let us know what systems you end up having.