Wow, Aerogel 4d 200 and vintage PK Black Ace? There is a big difference between the two. I appreciate that you like the classic racquets. If I was to suggest something in between, try the Pro Staff 95. It's a sweet frame.
I'm actually thinking about selling the Dunlop and reverting back to my ProKennex 5g with a leaded up hoop for my main stick. It's just that the 5g always played like an OS for me, I don't know if it's a mental issue or what...so lately I'm flirting with putting in an extensive amount of lead in the R-7 to make it way more HL...it'll have to do until I find an R-10...which are hard to find.
Eventually I see myself using just the R-10 and the BA with possibly some assorted moderns like the 5g and the k90. I'm a racquet lover too as much as a tennis lover, so I need to start customizing my racquets more for more consistency on the court. There's nothing like hitting serves with a 14 oz. racquet one day and an 11.8 oz. racquet the next day. UGGGH!
Yesterday I played a match with my Head Composite Edge (I prefer the PK Copper Ace) and did quite well. I must have thin beams or I feel like wanting to smash the racquet on the court (like I did with my Yamaha Secret...SUCH a great frame but way too stiff and wide...it's a shame really, they almost made the perfect racquet).
Today, I think I'll go with the customized R-7 because I can stick volleys with this racquet nicely. When I'm more serious about my tennis, if I ever will be (wins/losses), then I'll revert to having 3 of the same racquets like I did in college...but now its just as fun test-driving racquets as it is playing the tennis itself.