Energy C-300s vs. Polk Monitor 50 vs. Polk T90e

[lakingshockey]

Hi guys, I have a couple quick questions. regarding tower speakers. I'm looking to buy a pair of tower speakers to start off my home theater. The three models that i'm considering are:

Energy C-300 - ~$260 for a pair
Polk Monitor 50s - ~$180 for a pair
Polk T90e - ~$260 for a pair

From what i've read, the Polk T90e's are basically the European versions of the Monitor 60s.

Anyways, I'm looking for some advice? The monitor 50s would be a lot more budget friendly. Are the T90e's and the C-300 worth the extra money?

Also, my dad is giving me a center channel for free. Its an NHT VS 1.4. Would this be tambour matched to any of these floorstanding speakers. Here's a link to the specs for the NHT:

http://reviews.cnet.com/separate-spe...?tag=mncol;lst

For reference, I'm planning on getting either a Marantz 4002 or Onkyo 606 receiver to go with them. Thanks in advance for your help.