EBergerud
they come with a .15 nozzle default although they take up to .40 - and use the same needle/nozzle as the Eclipse
the Infinity would pay off with better results or just be fine to use
Both the Evolution & the Infinity use the same 0.15, 0.2, 0.4 & 0.6mm needle/nozzle sets & spray performance between the two models is identical. The Infinity is fitted with the "Fineline" air cap system which has a push on two pronged needle cap rather than the screw on needle cap fitted to the Evolution. Although the "Fineline" needle cap is easier to remove than the screw on version, there is again no difference in spray pattern or performance between the two systems.
EBergerud
Is there any real world difference between an Infinity and an Eclipse Evolution or does the Infinity just look neater?
As said above an Infinity or Evolution with the same size of needle/nozzle set will perform identically, the difference is in the additional bells & whistles of the Infinity;
"Fineline" air cap system (can be fitted to the Evolution),
Adjustable trigger tension,
Cut-out Rear handle with adjustable paint control & push button "memory" - the "memory" function allows you to switch between the your pre-set & full flow (a similar rear handle can be fitted to the Evolution, but it's not cut-out & is in standard nickel finish).
If you do decide to get an Infinity, it would be well worth considering one of the CRPlus versions (0.15, 0.2, 0.4, 2in1 & X), these are chrome plated externally, nickel plated internally, have long life triple needle seal & come with paint cup lid/s included. The external chrome plating is more resistant to wear & staining than the standard models full nickel plate & the price difference between comparative models is minimal.