Comparisons between Pup 150 and Bulldog:-
Control layout and handling generally quite similar, and circuit/approach speeds the same. Doggie even crisper in turns than Pup. Max performance turns particularly fun: yeeeeowwwww, watch that accelerometer go, baby.
Bulldog a bit heavier, so even more inclined than Pup to develop dramatic sink rate on final if not watched.
Bulldog generally a lot more punchy: good for short fields (Pup 150 less so, Pup 100, forget it: needs more runway than a Jaguar) Much, much better than Pup in the climb, and more stable in cruise (Pup can be a bit twitchy compared to a spamcan, but that's cos it is a proper aeroplane, to the extent that any trike ever can be).
Other features: Dog has great viz with bubble canopy (remember yer factor 97 suncream). A bit easier to get into and out of than Pup (which is only easy if you are into limbo dancing).
Drawbacks of Bulldog: silly military parts cost silly military prices. You can't put a seat in the back, tho there is plenty of room for one and probably wouldn't muck up weight & balance v much. No doubt owners/operators could list more.
Starting the beast requires at least three hands (good prep for future wobbletopping?) and can be a bit of a mission when its hot.
Conclusions: Dog delightful but dear. Pup perky and positively palatable. The comparison made above to British classic motors (though I would have said Triumph, not MG, for reasons of purely personal prejudice) is not unreasonable.