Какие классы интеллектуальных указателей COM использовать?

I'm confused by the choices for COM smart pointers classes for C++ programming:

There's three four I'm aware of:

• CCOMPtr from ATL
• _com_ptr_t from the MS Com Support Classes
• TComInterface (because I'm using C++Builder 2009)
• CCOMQIPtr, (which I'd previously forgotten)

I've read about the error vs. exception handling differences of the first two, but TComInterface seems totally undocumented. Both the first two seem to have gotchas or 'unexpected' behaviour, from what I can find.

Ideally, I'd like something that's clean and modern C++, but boost::com doesn't exist as far as I know...

I need to control an application from another vendor. They provide a COM interface via a TLB file.