I use the Dremel EZ-Lock system in the hand extension - it is a 1 1/2" reinforced wheel with an reinforced arbor hole with a quick locking system.
I switch between the thin blade and the metal blade depending on how accurate I need the cut or to minimize loss of track. The right angle attachment looks like a good idea.
Good for on table trimming.
The small Harbor Freight chop saw looks like it would be good for doing a lot of cuts - like an all flex layout build. This gives a good square and plumb cut.
SAFETY GLASSES ARE A MUST!!!!!