PMC Fact 3 with hegel h160 or accuphase 350

As long as your system don't produce motor boat noise: BoBoBoBoBo..... you will be fine
Sorry I can't think clearly without my coffee this morning, so please ignore what I just said

imhififan  do not worry
 drink before your coffee...
and then help me :)

The E-350 is a very well built integrated, you gain a lot of feature like pre-out/main-in, bypassable tone control and headphone output, it also has slots for D/A and phono card.  If you can find one with good price and condition, I will say go for it, try it in your system, if you don't like it, you should have no problem to resell it. BTW, my experience with Accuphase is their pure class A amp is more sweet sounding.
If you want something more sweet and warm, tube amp is the answer.

I have seen dealer using 'Spec' amplification used with Fact-8, yes the Fact series from PMC is pretty precise and the bass is quite deep.
Spec is  quite warm sounding and for the size it is quite powerful.

I don't know what other brands you have access to.  There are several other solid-state integrated's that are a little more "forgiving" than the Hegel, Luxman, Ayre, even Simaudio (in my experience).  PMC's Fact series is also less forgiving than their Twenty and now Twenty5 lines.  Otherwise, as already mentioned, start looking at tubes.