The Compadre is a better bet, especially for bad ground, beach hunting, and finding tiny items. A Silver uMax is even better than the Ace and the Compadre in that regard. An F-2 is better than ANY Ace ever made for beach hunting and target separation. Right there in Garretts own literature it denies the Ace 150 and 250 to be a good detector for beach hunting. The Compadre gets about the same depth in high iron ground than an Ace too, and it works better by far. I've matched all these detectors against each other. Personally, for low-cost detectors, I'd chose in this order;
#1
Tesoro Silver uMax, $239
#2
Tesoro Compadre, under $150
#3
Fisher F-2, $199.95
#4
Fisher 1225, $239.95
#5
Any good used White's Classic or White's Prism.
All the above will handle bad soil well, and the Silver uMax has a bigger coil variety choice.. The Fisher 1225 will go the deepest of all the above but talks a bit more due to it's inherent high gain (power). In fact, according to the old Fisher Company it has as much depth and power as a 1260, 1265, and 1266. The Compadre and Silver umax are the lightest of all though in a VLF.