Question on viability of a couple different voice routers I found

I'll keep this short and sweet, was looking for a reasonable voice router for labbing CME, and found the two following routers on Ebay:
Cisco 2821 512D 512F CME 8 6 iOS 15 1 CCP 2 7 CCNA CCNP CCIE Voice Lab 2811 CD 0746320911908 | eBay - 2811 with 512D/512F memory, no pre-installed modules or cards (no PVDM, VWIC,), 2 GB Ethernet ports (don't think these matter for lab purposes)
Cisco 2801 384D 512F CME 8 6 iOS 15 1 CCP 2 7 VWIC 1MFT T1 PVDM CCNA Voice 2811 | eBay - 2801 with 384D/512F, includes PVDM2-8 Module and VWIC-1MFT-T1 Card, 2 FastEthernet ports
Both routers include CME 8.6, CCP 2.7, and loaded with IOS image 'c2801-adventerprisek9-mz.151-4.M7.bin'
I am interested in the 2801 specifically, as it contains a VWIC and PVDM already, but not sure if the mentioned types of module / card are of any use for CCNA and CCNP level voice. Also the CCP already being loaded would be awesome for getting into my CCNA Sec studies.
What do you guys think? Any suggestions?
Trying to search for what is best, what will work, etc is making my head spin of my shoulders - any input would be greatly appreciated!
Cisco 2821 512D 512F CME 8 6 iOS 15 1 CCP 2 7 CCNA CCNP CCIE Voice Lab 2811 CD 0746320911908 | eBay - 2811 with 512D/512F memory, no pre-installed modules or cards (no PVDM, VWIC,), 2 GB Ethernet ports (don't think these matter for lab purposes)
Cisco 2801 384D 512F CME 8 6 iOS 15 1 CCP 2 7 VWIC 1MFT T1 PVDM CCNA Voice 2811 | eBay - 2801 with 384D/512F, includes PVDM2-8 Module and VWIC-1MFT-T1 Card, 2 FastEthernet ports
Both routers include CME 8.6, CCP 2.7, and loaded with IOS image 'c2801-adventerprisek9-mz.151-4.M7.bin'
I am interested in the 2801 specifically, as it contains a VWIC and PVDM already, but not sure if the mentioned types of module / card are of any use for CCNA and CCNP level voice. Also the CCP already being loaded would be awesome for getting into my CCNA Sec studies.
What do you guys think? Any suggestions?
Trying to search for what is best, what will work, etc is making my head spin of my shoulders - any input would be greatly appreciated!
Comments
CUCM SRND 9x/10, UCCX SRND 10x, QOS SRND, SIP Trunking Guide, anything contact center related
Just wanted to make sure the router wasn't a gold plated turd, as I'm not overly familiar with all the VoIP components yet - Thanks for the response as always shodown!
Thinking my setup for CME labbing will be 'PC - R1 - FRS - R2 - PC' and just load IP Comm on both pc's, and figure out how to integrate my CUCM VM in there a bit down the road.
Thanks again for the quick response shodown! I might not have snagged one in time without a second opinion, even though there's a 99% chance it will be republished with 2-3 more available within a few hours.