What are your thoughts on coring systems?  Are they worth it if you aren't making lots of bowls.  Do you have one that you don't use?  I probably don't need another tool 'on the shelf'.  If I am going to get one, I would like to use it with some regularity.  I generally seem to find access to wood pretty easily.  Thanks for sharing.

I think I would like to get one even if I am not using it regularly. Some of my larger bowl blanks I think I could get another 2 smaller bowls from the core instead of growing  4” in height standing on the wood chips from hogging it out.

Jenny, I have the same lathe as you and i went with the Mcnaughton.

I prefer this over the other systems because the operator can control the shape of the cores. There are also different size ranges of cutters.
When I bought mine years ago I bought the "standard" size cutters. I have since bought the mini (next size smaller) cutters. These work great and I find them to be a little easier on the lathe. The standard cutters work fine but you can stall the lathe pretty easy taking a bigger cut. It really depends on the size blanks you typically turn. If your in the 14-16 range, maxing out the lathe, the standard cutter might be better. If your in the 10-12 inch range the smaller cutters are fine.

As far as how often you use it or is it worth it, I look at it this way. Each blank you core you're saving at least about 40-50 percent. You can recoup your money with a small number of cores.
For example, If you purchase an exotic blank, you start to look at it in terms of "well $60 is expensive but I can get three bowls from it" So now you go from one $100 bowl to one $100 bowl, plus one $75 bowl, plus one $50 bowl. or the whole matched set for $250.
I core anything from about 8" diameter x 3" thick on up. You can core smaller if you and the wood want to. Even small blanks are great to core, I keep the centers for inlays or box lids, there are lots of possibilities.
I find it's simple to just drop it in the banjo and your ready to core, nothing to set up. Just decide on your cutter, line it up and go.
I'm sure others will offer more suggestions, hope this helps.
This is all JMO

Jenny, I have both the McNaughton and the Oneway. I bought the McNaughton many years ago and have never really learned how to use it successfully.  I have had some success with it with wet wood but not much success with dry wood. Like Robo said you either swear at it or by it.  The learning curve is very long.

About six months ago I got bought the Oneway Coring System and have been very pleased with the way it works.  As Robo says, it is pretty foolproof.  I really like it and use it all of the time.

You might want to see if there is anyone in your area that uses either one and check out how they work and give each a try.

Good luck.
Steve