That's my struggle IanT. I have a few models i DON'T want to risk crashing, and a few that need more than 40a to be content (getting into EDF)
so far the most reliable I've seen are the fliteTest ones. I've litterally burned through a couple cheaper china esc's. One actually started on fire, two have just outright burned out mid-flight and stopped responding. I've been fortunate to not lose recievers and the one on fire I was able to rip the motor pod out with the esc and get everything disconnected and removed before too much damage was done to the actual plane.
Trying to source reliable (and in the 60a range) esc's seems much harder to do. I only currently fly 3s but plan to go into more 4s next spring.. and with better and better planes on my build list I'd prefer not to lose any due to electrical failure!
I should note, I tend to push my planes a bit. most of them I fly near full throttle most of the time. a couple I intentionally harass to see how much abuse they can take before something folds. I expect with 4s next spring I'll start breaking more things. (just means more to build!)
But I'm still trying to source reliable esc's, and am willing to throw a *little* cash at them to get something better. I mean, the alternative is I stick with Flitetest ones afterall.
I go for the Turnigy Plush as they tend to have 5amp BEC's, if your using metal gear servos or doing 3D aerobatics. With all your servos acting at once in aerobatics then you need a minimum of 5amps for your BEC, plus the current draw on metal gear is higher than for nylon gear servos.
When I converted my WOT trainer I fitted a Hobbywing Skywalker 80 amp ESC with a 2s-6s battery range and has a built in 5v, 5amp BEC. Used this make for a long while now and trust them on my decent models.
Although when I start getting confident with my WOT trainer and start doing some aerobatic manouvers, I may swap over to a seperate BEC just in case (although the HobbyWing would probably be fine, its just me being over cautious).
The Hobbywing Skywalker 80 amp for example will cost you around £23.60 which is the equivalent of $31.65 incl P&P from Banggood. They do a range 20, 30, 50, 60 and 80 amp, take your pick.
The Turnigy Plush I buy from Hobbyking and are a bit more expensive, but as I said previously compared to the price of a decent plane its a drop in the ocean.