Beseler Head...

.....for a 23C. Do you guys have an opinion.?
I typically see two different types:
1. Dual Dichro S
2. Dichro 23 dga

Is one "better" than the other, or are they pretty much the same unit.?
Thank You

I guess one of my questions is.....can I just put this on top of my standard 23C and start to print.?
http://www.ebay.com/itm/331657293193?_trksid=p2055119.m1438.l2648&ssPageName=STRK:MEBIDX:IT

And then there is this within range of my car.
http://www.ebay.com/itm/151774307390?_trksid=p2055119.m1438.l2648&ssPageName=STRK:MEBIDX:IT

Thanx

The black one is newer. I don't know anything about the older, it may or may not be the same.