$4,900 for a L8 is really a strong drink to have to swallow but get 10% off if you buy on the Landice site. If you need a treadmill with these capabilities, you are in the commercial tread range when you get to this price point.
This console gets lost in the wash with the L8 series. If you just need the extra room, the Pro Trainer is the smart choice. If you want programs you are likely going to want heart rate and if so, the Cardio Trainer will be the one for you. For those serious runners who need higher speeds and more room, the L8 is worth the extra but the Pro Sports Trainer is kind of lost in the shuffle in the L8 lineup. I realize they already have the console from the L7 series, but I wouldn't buy this model.