Alguien me puede indicar la efectividad / fiabilidad de alguno de los siguientes servidores.

mundiserver.com radikal2xl
Intel
Quad Q6600
4x2.40+ GHz
4 GB
1 TB
100 Mbps

mundoserver.com
Pentium IV 2.4 Ghz
250 gb disco duro
80 mb unmetered
Directadmin / Plesk
1 gb ram

serverloft.eu
Intel Xeon DP E5405
2x Quadcore
RAM 8 GB
DDR2-667 ECC Registered
Harddrive
2x 500 GB
SATA II 7,200 rpm

meganetserve.com
Intel Core 2 DUO 2.8 GHz Processor
2.0 GB RAM Standard, upgradeable
500 Gig Hard Drive, upgradeable
5 IP Addresses included, upgradeable max 13 IPs
Fully switched burstable Network Port
Up to 2000 Gigabytes Network Bandwidth per month included
MRTG Bandwidth Usage Monitoring Tool provided

info@1and1.es
Procesador: Opteron 1218 HE
Velocidad procesador: 2 x 2,6 GHz
Memoria RAM: 4 GB RAM
Disco duro: 2 x 400 GB (RAID 1 SW)

Gracias