Winter Cycling - PI Therma Fleece or AmFib Tight

Looking to buy a pair of tights and would like your advise. Surley some of you own both. What are the usable temp ranges for the Pearl Izumi Therma Fleece and Amfib tights? When do the Ambibs get to hot for you? When are the Therma Fleece to cold?
I ride in Wisconsin. Stickley a road bike out for a workout kind of rider.

I have a pair of Amfib tights. They have a windproof fabric on the front that is nice. Very handy for the really cold rides. For me that's 5-30F or thereabouts. Anything above 30F, and I think they might be a little too much. Then again, my legs and feet don't freeze out like others seem to. I'd be very comfortable in fleece lined tights around 40F and probably down to 30F.

The only thing about the Amfibs I don't care for are that they're a little stiffer. Range and fluidity of motion is hampered a tiny bit. Then again, that's winter riding for you. I don't mind, since I'm not hammering in December and January (or February or...).

Therma fleece is available with a PRT pad, AmFib tights aren't. AmFibs are definitely a below freezing temperature tight.

At what temps do your Anfibs get to hot to wear??? How cold can you ride with your Therma Fleece??

I have Amfibs and thermafleece but I suggest you try the Performance Triflex, good price, they breath a little better than the amfibs and have a better windproof front panel than the thermafleece.

Second Vote for Performance Triflex...
I have the Bibs...
Been wearing them last couple days, feel nice and warm.