I have never read a bad thing about elec. over hyd. brakes. If you can float the money I would get a Brake Smart controller. Have also read they are the best. I don't know what their called now, as I think the name has changed.
They are sold by Dr. Performance and IMHO are best brake controller for what you want to do. I have a 4Star horse trailer that weighs 10K# empty and it is rated to 23K# GVWR. I have had it a few # over 18K# loaded for a large horse show. The truck in my signature had no problems with that load. The Dexter Electric over Hydraulic Disc brakes are superb.
2002 F350 Lariat CC 4x4 Auto 4.10 DRW, DP-Tuner F5 live tuned stock, quiet, 40dd, 40, 60, 80 tow, 80e and 120r, B&W GN, BrakeSmart, 'pooned tank, tank and pre-pump mods, 2Á Dahl 100 filter, regulated return, BTS dual HPOP, AC singles with EDM 34 lpm nozzles, AIS, H2e, Spearco 6.0 IC, Hypermax 3.5" dp--> MBRP 4" 304SS exhaust, BTS tranny, 203║ T-stat, Chevron ELC, coolant filter, Oilguard bypass with Schaeffer 9000, WranglerNW 200 amp alternator & Optima group 31 batteries, Nippon-Denso starter, SPA gauges, SteveRacer mods, Hella 80/100W 9007s, Hella Micro DE foglights, 1000FF driving lights, 220W backup lights, Stancor contactor, Michelin XPS Traction tires, X-Springs, Bilstein shox, custom bumpers but otherwise stock. Nov 30 '99 build engine with 16 K miles, Fluidampr, Comp Cam 910 springs, Melling LPOP and ARP headstuds.