Pro Prints VS Highstreet

Should I get my photos printed using a professional Colour Lab or a Highstreet printer such as Snappy Snaps, Boots or alike?

Pros of Professional

Pros:

Excellent Quality

High quality archival paper used (will last for over 80 years without fading)

Cons:

Slightly more expensive

High Street Printing

Pros:

Cheap

Can print as you wait

Cons:

Poor quality

Uncalibrated Printers
Inconsistent Colours

Cheap Paper (often out of date)