Hi Mountain Man. I panned for many years as a kid (we had gold on our property and all around at Tumbarumba). I have been detecting now for many years and only go sluicing panning when my detector finds gold that indicates panning is worthwhile.
I would never go back to sluicing/panning because the amount of gold found with a detector usually exceeds 30 ounces a year for me now.
To answer your question, if you have only limited time to fossick stick with what you know.
If on the other hand you decide you want to devote say 50 days or more a year detecting for gold and you have the will and dedication to research spots, work hard at getting to know your detector and to seek out experienced people to help/advise you at the start...and you have a strong desire to find a reasonable amount of gold and go in the draw for a slim chance at finding a lot of gold.....then consider detecting.
Many people spend $4000- $10000 on a detector/pick/extra coil etc and never find much gold. Becoming a student of detecting and gold research and spending plenty of time with the coil on the ground are critical to success. (or spend the money, be a hobbyist, detect occasionally and find a few nuggets and be happy)
If you think the above criteria fits you and you have the detecting time available, and you do decide to take the plunge, buy a minelab 4500 as a minimum and go for it. A SDC will get you plenty of small gold but won't get you large amounts of gold because the coil is small and does not cover enough ground. You can buy cheaper detectors or say a Minelab 2200 and they will find gold but I would strongly recommend starting at nothing less then a 4500.
That's my take on it. A little strong I know. Hiring or going out with friends with detectors may also be a first step.
Also consider that if you do take the plunge and it does not work out, or is not for you...you can sell the detector without taking a major financial loss.
Cheers RDD.