The PC I`m currently using was bought from Power Computing in May/June 2005. Both HDDs fitted by them (Maxtor) have failed during this time; they replaced one, a 16MB cache with an 8MB cache, under warranty, the second I went directly to Maxtor for a replacement.
On the positive side the PC has functioned reasonably well even though a bit noisily. It is quieter with WD HDDs and a replacement chip cooling fan from Asus - that failed outside warranty and as I found out was a known shortcoming of the motherboard anyway.
I found their customer service within usual tolerances.
It is, as always, your choice as to which supplier you choose and whether you consider the specification offered to be value for money. There are many suppliers to choose from and all will provide a quote against a specification. You say Novatech don`t offer such a setup, have you e-mailed them or looked at the options to personalise a PC?