I bought a 91 YJ 2.5 with a 5 speed from it's second owner after test driving it around his neighborhood. The jeep ran well, accelerated well and was fine. On the interstate on the way home, it took some time but climbed to 70 and I was satisfied with that. The thing is, I live in the texas hillcountry... we have quite a few 6 to 7% grades out here on the interstate between towns..the jeep will drop to about 55 on these, obviously requiring a downshift - but we all know it isn't an interstate vehicle.
In my driving...it pulls best up to about 45 to 50 mph and is more gradual in acceleration past about 60, so for most around town stuff, the 4cyl is perfectly fine. On the straight and level it will hold 70 without a problem, i've actually gotten it up to about 85 or so without a downgrade. I drive it to work with some interstate and some residential and stay with traffic fine in the city.
I've done some mild offroading with it...seems to have good torque and gearing for it. I haven't tried the beach yet...I'll report back on that here in a month or so :shades:
As for the ax-5, mine has a little issue with 5th jumping out when decelerating down hills, something with the synchros I have been told... I just give it a little nudge when I know I am going to be slowing down. Luckily a rebuilt trans isn't going to kill you if you do have to put one in. I have a toyota camry also...o2 sensor, $240, heater core $200 (aftermarket), steering rack $600, plastic radiator from a fly by night guy on ebay was $90....(none including labor...did it myself) you get the idea. Makes jeep parts look real affordable...and easy to work on.
For comparison... I have two friends, one with a 93 yj and the other a 99tj both stock, autos with the 4.0. The 93's power "feels" stronger than the 99 to me, but of course the 99 drives and rides more comfortably. Compared to my 2.5, of course the 4.0s are nice. You can buy a toyota with a 4cyl or a lexus with a 6...doesn't mean you need the lexus..both are good if you get what I am saying.
And yes...as every person here has said...the price sounds high...I just saw a 99 4.0 auto with 133k sell for 6000 at manheim auto auction...it was really clean too.
James