Having said all that I've been very happy with my Blacktip but it has it's limitations. It's a recreational scooter at a great price point that in some cases has better performance than some "tech" scooters. You're not going to get the range/runtime and thrust of more expensive scooters but of course your post mentioned wanting a strictly recreational scooter.
I've done a bunch of 2-2.5 mile (10560ft+) roundtrip dives with the Blacktip. It's not going to compete with a $6000-$8000 scooter but that is not it's market. I feel like a lot of people "poo-pooing" on the Blacktip have some insecurity here that a $2000 scooter can occasionally keep up a "big kid" scooter. Just my observation..
GUE instructors tend to be heavily biased towards Suex scooters. I'm just stating a fact. I think they're very good scooters but they are the current "kool-aid" for GUE instructors, Extreme Exposure is a dealer and Halcyon sells rebranded Suex scooters. They've very much a "uniform" for a lot of GUE divers. Again, they're great scooters and that is one of the reasons why they are so popular but it's not the whole story.