hi all, im going to buy a new engine for my Tamiya Nitrage this week, looking at either a HPI nitro star 4.6 v2 for $249 or a STS 5 port .28 size engine. i only use it as a basher might race one day but just some fun for now, just wanted some feedback on the STS brand engine or if i should go for the HPI. just want good power & reliability.