Many believe the 3000 is the best quality machine Commodore made (2000, too). It is the most powerful Amiga with thru-hole technology and replaceable chips! This makes it far more repairable by the avaerage user than any cost saving SMT system. When coupled with almost any thru-graphics card, and a new 128 MB memory card, it becomes fairly modern very quickly. 
My .02.
i agree for the most part, but the 4000 with surface mount is what makes it so reliable. those 20+ year old sockets in the 3000 often tarnish and the chips need reseating.
The 3000 was a good design memory wise and with scsi,but some problems you run into: most came with buster7,which don't support Zorro-3 DMA or Quick Interrupts, and they don't attempt to translate local bus burst cycles into Zorro-3 burst cycles-easily upgraded.
next is the dmac2/ramsey4 which are part of the problem of detecting static column ram when used with 3640 cards-not a problem in most cases since using pagemode in the first bank works around this, ideally the dmac4/ramsey7 was the upgrade.
Although the case looks cool, you have to tear it almost completely down to do anything inside. Most accelerators don't fit well with ram except the warpengine 3040.The a3640 will fit with a microscopic fan or large wide heatsink seen in some 4000t's. You still cant have any 5.25" cdrom etc inside,so external scsi case for that-which isnt a big deal.
It needs Int2 wire soldered for the accelerator scsi usually.
Wd33c93 needs upgraded to rev8 or amd 33c93a to fix some ssi troubles when using multiple drives/cdroms etc- most came with rev4 proto chips or earlier.
fix all that and the battery and it makes for a solid machine, i ran one to death back in the 90's stuffed full of cards. it never missed a beat but i still love the 4000(t) and its cheaper in the long run since it usually has the latest ramsey,dmac,buster.
