I still suggest to get hydrotherm, keep in mind that with it you don't need humidity and temp gauges, so no need to spend $ on them. I was hesitant to buy it just because it is close to 200$ in Canada in stores, but after constantly failing a battle to keep climate where i want it to be i got one off ebay, amazon.com ships to US only. the thing is amazing and right now 3 more are coming my way.
I must say that is the best investment in a frog hobby!