Cement splicing, any caveats?

I'm interested in getting a new super-8 film splicer. Having used a tape
splicer in the past, I now would like to get a cement (wet/glue) splicer,
but know next to nothing about these... are there different types,
different approaches, how do they differ, and which advantages and
disadvantages do they have? In short, what all should I know to make an
informed decision?
On a related note, non-tape splicers are really scarce on eBay. Can anybody
recommend other online sources to buy them from?
Thanks!

The discussion of splicing film can fill a book. I can give you my two bits and
I hope the experts here will answer too. There are a few different types of
cement splicers out there to look at. First, there are the cheaper "stamped"
metal ones that are common and cheap but make a good splice.

Then there are the fancier models made using precision machined parts
(particularly the base plate the film sits on) that produce a more precisely
aligned splice. These would include the cement hot splicers like the
Meier/Hancock and the Bell and Howell, etc.

Then there are some specialty splicers like one made by Hahnel. The model I
used had a spinning blade to scrape the emulsion and spliced the film using
only a half a film frame to make a splice which went through the projector
almost unnoticed.

Which ever model you use, Make sure the film cement isn't too old or you may
have trouble making good splices. (I don't even know where you can get cement
any more.)