I.M.O. if the budget will stretch that far I would go for the HW95 (weight 7.25lbs, length 43ins) over the HW99 (weight 7lbs length 43ins). The HW30 (5.5lbs length 40 ins) while a lovely gun (our club has 6 of) it is basically a junior rifle and I doubt could attain full power and remain useable/accurate. The HW50 (6.7lbs length 43.3ins) is capable of being tuned to full power and I.R.C. an article in Sporting Air Rifle was written on this subject.
The Perfect trigger, while good, is no match for the Rekord unit I.M.O.
I usually suggest to people that they visit their local airgun club and try the rifle in question out but in this case they (HW30 & 50) are quite rare.
H.T.H.
Ian