The Etrac is a reasonably advanced detector and possibly a bit complex if a first time user, though there are some inbuilt programs for those just starting out. It does well on deep high conductor coins, has more advanced discrimination than the Equinox and has a good selection of aftermarket coils available, though downsides include the weight, slower recovery speeds, and if beach detecting is a priority it is also not waterproof, only the coil is.
If you prefer a lighter waterproof and more simple detector that covers most fields of detecting, then either the Equinox 600 or 800 may fit the bill more.