I have a confession... A number of years ago (12 or so), I was given a BSA Bantam to restore. I loved that bike, and I loved restoring it - to make it more enjoyable, I bought a hydraulic workbench. It was great. I used it regularly for 12 years, lifting everything from my Bantam to my Pan European and a BMW Tourer.
The Rocket, however, broke it. OK, it didn't actually break it but because there's no mainstand on the Rocket, it wouldn't fit, so I sold it. Even after a dozen years hard use, I popped it onto eBay and sold it for about the same price I paid for my Big Blue - given that I paid about half that for the original bench, I was delighted. Amazed, but delighted.
It made the swap cost-neutral for me and I'm delighted with that (I'm easily delighted, it transpires). I'm equally delighted that the Big Blue lifts my Rocket around 7 inches more than my old bench - those extra inches are massively useful, far more so than the apparent small increase in height may suggest.
I'd like to open the floor to cheap jokes about extra inches and low cost per inch, if I may... Boys will be boys after all. (darn it, too late - the post above was made whilst I was typing!)
I think what I'm trying to say is simply this - your old lift may have value and you may find that the change isn't as expensive as you first think as a result of that value. The extra clearance may be useful, but if you find your current lift ideal for certain tasks, and if so, the Big Blue can be paused at any point without needing to be locked in place (unlike my old bench).
More than one way to look at this particular situation. I'm a big fan of the Big Blue, but I know that other people have lifts which they prefer, so my impression of the BB is simply that - my impression. Other opinions are available.
