I have the two in one H & S. Not a gimmick as you can use both needle/nozzles easily.
The Solo normally comes with a .2 needle. It is the same as the 2in1 with out
a .4 needle nozzle supplied.
The two in one comes with a .4 and .2 needle nozzle.
When I used the H & S regularly I swapped and changed needle nozzles.
Takes about 30 secs. Unlike the Iwata, which has a screw in nozzle (a pain)
the H & S type nozzle just pushes into a housing.
The Silverlin is the same model as all the Evo types. But it has an adjustable
stop on the end to control the amount you pull back the trigger.
Sound great but it is a pain. If you have slight blockage, with acrylics,
they can normally be squirted out at full trigger. With the adjuster you
are restricted. I found that during the same session that I may want
to use more or less trigger where some areas are large and some small.
ie adjust the paint stream by experience.
The Sliverline comes with the quick release. But it is the tail it does not
come with the expensive bit to add on to the hose. I bought quick release
for all my brushes but have chucked them all in the dustbin. First I found
they are quite long and get in the way ie they extend the hose into a solid
end piece. They also leak even the more expensive ones.
Costs. John is about £4 less on the two in one at Everything
Airbrush.
On the Solo John is about a £1 cheaper.
The Evo is a great brush. Dead easy to clean. I would go for the .4 and .2
combination. .4 is great for large areas. The .2 great for detail work.
It is unlikely you would need to change needle/nozzles while in a session
as the two sizes are used for different types of work.
All my opinion of course but after considerable use. Stiil use it for certain
work where the Iwata is not as handy usually varnish work as they are
much easier to clean than an Iwata.
Laurie