Newbie to solar question

I jumped into solar as a newbie. I went with two 140 watt 12 V nominal panels (great price on sale) and I wanted to have the potential to upgrade without having to rewire/reinstall anything new if that happened. My tt still just has the 2 oem group 24s (140 Ah) and I know that will be a priority future upgrade. Since I would start with around 15 A max current and wanted to plan for up to double that, I started looking for 30-45 A rated PWM controllers. At the price ranges I was finding, it seemed like it was less than $50 more for a "nice" Morningstar Tristar. I've been very happy with that controller, it has the ability to be fully programmable and has many options like diversion load ability. Maybe more capabilities than I will ever use, but I feel good knowing my controller is no bottleneck to current or future use and can do so much.