Never tried to carry a full size fridge or mattress, but I'd guess you'd need the largest model for tasks such as that. One nice feature is the modular design. If you buy the 96, you can configure a 32 or 64 inch trailer from it. The 32in Bikes@Work trailer would probably meet most of you daily hauling needs, but on the rare occasion that you need the extra capacity, you'll have it.

I wasn't sure whether to get the 32 or the 64. I'm really glad I got the 64, I do a lot with it that I couldn't do with the 32. The 64 is a bit unwieldy, for weaving through traffic and such. I don't think you will want to pull the 96 regularly, but you will have the option. Get a "THIS TRUCK MAKES WIDE RIGHT TURNS" sign, haha.