Replacement JDM Engine 4afe vs 5afe vs 7afe, Looking for the Pros/Cons of replacing engine with JDM 4afe vs 5afe vs Options

[mjzraz]

I am looking for the Pros/Cons of replacing engine with 4afe vs 5afe vs 7afe.

I have a 1994 Celica ST with the 1.8 7AFE Engine and auto trans. I am replacing the engine with a used engine due to Bearings, cracked Head, etc. Economy and reliability are the primary concerns. While more power is always fun, performance is secondary in this situation because we are already into the car with too much money and as it is, I need to perform all the labor myself.
From what I have researched any of the three long blocks can be swapped with each other. Here is a great post from last year about a 4AFE swap for a 7AFE

The specs that I have been able to look up are:
7AFE - 1.8 - HP:115@5600 - Torque:115@2800 Compression:9.5:1 (more torque and at a lower rpm)
4AFE - 1.6 - HP:115@6000 - Torque:109@4800 Compression:9.5:1 (early 4afe were 102HP)
5AFE - 1.5 - HP:100@5600 - Torque:102@4400 Compression:9.8:1

Cost:
7AFE - $650+$100 Shipping = $750
4AFE - $550+$145 Shipping = $695
5AFE - as low as $250+$180 shipping = $430 up to $500+$145 Shipping = $645

At the lowest cost, the 5AFE is $320 cheaper than the 7AFE. That's a huge difference. Considering that I still need a new water pump, timing belt, radiator and exhaust manifold, I can use the savings. I just don't want to be looking back 6 months from now and thinking why did I cheap out and not get the 7AFE. Some of the importers are pushing the 5AFE and certainly have cheap prices. The 7AFE engines are also not as readily available and thus another reason they are more expensive. Will the performance decrease be that bad? The car is an automatic. Any advise would be appreciated. I need to get moving to have this car ready when my daughter starts college in 4 Weeks.
Thanks, Mike

[Bitter]

have the head machined flat and replace the head gasket. that should get it going again and you'll get a small bump in CR from the head being shaved a little.