I just purchased a 2015 Integrity all aluminum tandem axle custom made for a new R25SC. Electric over hydraulic brakes, LED lighting, aluminum wheels with mounted aluminum spare tire. Cost was just over $9,000. The electric over hydraulic brakes tend to add about $900 to $1,000 over the cost of surge brakes, but unless you are only trailering a short distance to the ramp they are well worth the cost, IMO. Last two new trailers I purchased before this one had them and I will never tow a boat this heavy without electric over hydraulic brakes (my trip to launch is typically 300 miles). I did tow a 5,000 lb boat with surge brakes for 17 years before that, until that fateful day when the semi truck lost stuff in the middle of the road, at night, ahead of me and I needed to buy a new boat.