I wouldn't pick gear based on a single review. Jeff's opinion is intriguing but he is already a Vandersteen owner and likely has some level of bias.
I don't agree that the LS50s need "top quality" or high power amplification. I tried them with both of my <100 watt Yamaha amps (one of $500 and one of $2500 MSRP) and they sound great with both. If you listen above 90db much of the time, then you'd probably want a 200 watt+ amp. At moderately loud volume, they're not terribly power hungry. Vandys will certainly be easier to drive, but listen to both of you can swing it. IME, in home auditions are a must when choosing speakers. Let your ears be your final guide.
I don't agree that the LS50s need "top quality" or high power amplification. I tried them with both of my <100 watt Yamaha amps (one of $500 and one of $2500 MSRP) and they sound great with both. If you listen above 90db much of the time, then you'd probably want a 200 watt+ amp. At moderately loud volume, they're not terribly power hungry. Vandys will certainly be easier to drive, but listen to both of you can swing it. IME, in home auditions are a must when choosing speakers. Let your ears be your final guide.